human
***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: Abstract OBJECTIVE : Assess impact of a computer-based patient support system on quality of life in younger women with breast cancer , with particular emphasis on assisting the underserved . DESIGN : R and omized controlled trial conducted between 1995 and 1998 . SETTING : Five sites : two teaching hospitals ( Madison , Wis , and Chicago , Ill ) , two nonteaching hospitals ( Chicago , Ill ) , and a cancer re source center ( Indianapolis , Ind ) . The latter three sites treat many underserved patients . PARTICIPANTS : Newly diagnosed breast cancer patients ( N=246 ) under age 60 . INTERVENTIONS : Experimental group received Comprehensive Health Enhancement Support System ( CHESS ) , a home-based computer system providing information , decision-making , and emotional support . MEASUREMENTS AND MAIN RESULTS : Pretest and two posttest surveys ( at two- and five-month follow-up ) measured aspects of participation in care , social/information support , and quality of life . At two-month follow-up , the CHESS group was significantly more competent at seeking information , more comfortable participating in care , and had greater confidence in doctor(s ) . At five-month follow-up , the CHESS group had significantly better social support and also greater information competence . In addition , experimental assignment interacted with several indicators of medical underservice ( race , education , and lack of insurance ) , such that CHESS benefits were greater for the disadvantaged than the advantaged group . CONCLUSIONS : Computer-based patient support systems such as CHESS may benefit patients by providing information and social support , and increasing their participation in health care . These benefits may be largest for currently underserved population Background There has been increasing interest in the ability of the internet to produce behaviour change . The focus of this study was to describe program exposure across three intervention groups from a r and omised trial ( RT ) comparing traditional face-to-face , internet-mediated ( combined internet plus face-to-face ) , and internet-only program delivery . Methods Baseline and immediately post-intervention survey data , and exposure rates from participants that commenced the RT were included ( n = 192 ) . Exposure was defined as either face-to-face attendance , website usage , or a combination of both for the internet-mediated group . Characteristics of participants who were exposed to at least 75 % of the program material were explored . Descriptive analysis and logistical regression were used to examine differences between groups for program exposure . Results All groups showed decrease in program exposure over time . Differences were also observed ( χ2 = 10.37 , p < 0.05 ) , between intervention groups . The internet-mediated ( OR = 2.4 , 95 % CI 1.13–5.1 ) and internet-only ( OR = 2.96 , 95 % CI 1.38–6.3 ) groups were more likely to have been exposed to at least 75 % of the program compared to the face-to-face group . Participants with high physical activity self-efficacy were 1.82 ( 95 % CI 1.15–2.88 ) times more likely to have been exposed to 75 % of the program , and those allocated to the face-to-face group were less likely to have attended 75 % of the face-to-face sessions if they were classified as obese ( OR = 0.21 95 % CI 0.04–0.96 ) . Conclusion These results suggest that the internet groups were as effective as the face-to-face delivery mode in engaging participants in the program material . However , different delivery methods may be more useful to different sub- population s. It is important to explore which target groups that internet-based programs are best suited , in order to increase their impact CONTEXT Rapid increases in access to the Internet have made it a viable mode for public health intervention . No controlled studies have evaluated this re source for weight loss . OBJECTIVE To determine whether a structured Internet behavioral weight loss program produces greater initial weight loss and changes in waist circumference than a weight loss education Web site . DESIGN R and omized , controlled trial conducted from April to December 1999 . SETTING AND PARTICIPANTS Ninety-one healthy , overweight adult hospital employees aged 18 to 60 years with a body mass index of 25 to 36 kg/m(2 ) . Analyses were performed for the 65 who had complete follow-up data . INTERVENTIONS Participants were r and omly assigned to a 6-month weight loss program of either Internet education ( education ; n = 32 with complete data ) or Internet behavior therapy ( behavior therapy ; n = 33 with complete data ) . All participants were given 1 face-to-face group weight loss session and access to a Web site with organized links to Internet weight loss re sources . Participants in the behavior therapy group received additional behavioral procedures , including a sequence of 24 weekly behavioral lessons via e-mail , weekly online su bmi ssion of self-monitoring diaries with individualized therapist feedback via e-mail , and an online bulletin board . MAIN OUTCOME MEASURES Body weight and waist circumference , measured at 0 , 3 , and 6 months , compared the 2 intervention groups . RESULTS Repeated- measures analyses showed that the behavior therapy group lost more weight than the education group ( P = .005 ) . The behavior therapy group lost a mean ( SD ) of 4.0 ( 2.8 ) kg by 3 months and 4.1 ( 4.5 ) kg by 6 months . Weight loss in the education group was 1.7 ( 2.7 ) kg at 3 months and 1.6 ( 3.3 ) kg by 6 months . More participants in the behavior therapy than education group achieved the 5 % weight loss goal ( 45 % vs 22 % ; P = .05 ) by 6 months . Changes in waist circumference were also greater in the behavior therapy group than in the education group at both 3 months ( P = .001 ) and 6 months ( P = .005 ) . CONCLUSIONS Participants who were given a structured behavioral treatment program with weekly contact and individualized feedback had better weight loss compared with those given links to educational Web sites . Thus , the Internet and e-mail appear to be viable methods for delivery of structured behavioral weight loss programs Online therapy offers many advantages over face-to-face therapy . Interapy includes psychoeducation , screening , effect measures , and a protocol -driven treatment via the Internet for people suffering from posttraumatic stress . The present article reports the results of a controlled trial on the Internet-driven treatment of posttraumatic stress and grief in a group of people who manifested mild to relatively severe trauma symptoms . Participants in the treatment condition ( n=69 ) improved significantly more than participants in the waiting-list control condition ( n=32 ) on trauma-related symptoms and general psychopathology . The effect sizes were large . On most subscales , more than 50 % of the treated participants showed reliable change and clinical ly significant improvement , with the highest percentages being found for depression and avoidance Background Most work sites engage in some form of health promotion programming design ed to improve worker health and reduce health care costs . Although these programs have typically been delivered through combinations of seminars and print material s , workplace health promotion programs are increasingly being delivered through the Internet . Objective The purpose of this research was to evaluate the effectiveness of a Web-based multimedia health promotion program for the workplace , design ed to improve dietary practice s , reduce stress , and increase physical activity . Methods Using a r and omized controlled trial design with pretest-posttest comparisons within each group , 419 employees of a human re sources company were r and omly assigned to the Web-based condition or to a condition that provided print material s on the same topics . All subjects were assessed at pretest and posttest through an online question naire containing multiple measures of health behavior and attitudes . The test period was 3 months . Question naire data were analyzed mainly by analysis of covariance and t tests . Results Retention rates were good for both groups—85 % for the Web-based group and 87 % for the print group . Subjects using the Web-based program performed significantly better than the print group on Attitudes Toward a Healthful Diet ( F1,415 = 7.104 , P = .008 ) and Dietary Stage of Change ( F1,408 = 6.487 , P = .01 ) , but there were no significant group differences on the five other dietary measures . Both groups also showed improvement from pretest to posttest on most dietary measures , as indicated by significant t tests . Within the Web-based group , dosage analyses showed significant effects of the number of times the subject accessed the program on measures of Dietary Self-Efficacy ( F2,203 = 5.270 , P = .003 ) , Attitudes Toward a Healthful Diet ( F2,204 = 2.585 , P = .045 ) , and Dietary Stage of Change ( F2,200 = 4.627 , P = .005 ) . No significant differences were found between the two groups on measures of stress or physical activity , although t tests of pretest-posttest changes indicated that both groups improved on several of these measures . The Web-based group gave significantly higher ratings to the program material s than the print group on all health topics and in their overall evaluation ( F1,410 = 9.808 , P = .002 ) . Conclusions The Web-based program was more effective than print material s in producing improvements in the areas of diet and nutrition but was not more effective in reducing stress or increasing physical activity . The higher ratings given to the Web-based program suggest that workers preferred it to the print material s. Both groups showed numerous pretest-posttest improvements in all health topics , although such improvements might be attributable in part to a Hawthorne effect . Results suggest that a multimedia Web-based program can be a promising means of delivering health promotion material to the workforce , particularly in the area of diet and nutrition Background Psychoeducational programs are increasingly being delivered over the Internet . We created an Internet-based , cognitive therapy , self-help program to be used as a st and -alone intervention for mild-to-moderate depression , or as an adjunct to traditional services for more severe depression . Objective To evaluate the effectiveness of a web-based intervention program to reduce depression in a r and omized , controlled trial Methods In a private , nonprofit health maintenance organization , we mailed recruitment brochures to two population s : depressed adults ( n = 6994 ) who received traditional medical services for depression , and an age/gender matched sample of nondepressed adults ( n = 6996 ) . Participants consenting to the study were r and omized to either the experimental Web site ( n = 144 ) , or a no-access control group ( n = 155 ) . Participants in both groups were free to obtain nonexperimental , usual care services for their depression . All participants completed an on-line version of the Center for Epidemiological Studies Depression Scale ( CES-D ) at enrollment and at 4- , 8- , 16- and 32-weeks after enrollment . Mean intake scores were in the severely depressed range . 74 % of participants completed at least one follow-up assessment . Unfortunately , most intervention participants accessed the Internet site infrequently . Results We failed to find an effect for the Internet program across the entire sample . However , post-hoc , exploratory analyses revealed a modest effect among persons reporting low levels of depression at intake . Conclusions The negative results might have result ed from infrequent patient use of the Internet site , or a more seriously depressed sample than the intervention was intended to help . Future studies should focus on recruiting persons with mild to moderate levels of depression , and on increasing participant use of the Internet site Background Self-help therapies are often effective in reducing  mental health problems .  We developed a new Web-based self-help intervention based on problem-solving therapy , which may be used for people with different types of comorbid problems : depression , anxiety , and work-related stress . Objective The aim was to study whether a Web-based self-help intervention is effective in reducing depression , anxiety , and work-related stress ( burnout ) . Methods A total of 213 participants were recruited through mass media and r and omized to the intervention ( n = 107 ) or a waiting list control group ( n = 106 ) . The Web-based course took 4 weeks . Every week an automated email was sent to the participants to explain the contents and exercises for the coming week . In addition , participants were supported by trained psychology students who offered feedback by email on the completed exercises . The core element of the intervention is a procedure in which the participants learn to approach solvable problems in a structured way . At pre-test and post-test , we measured the following primary outcomes : depression ( CES-D and MDI ) , anxiety ( SCL-A and HADS ) , and work-related stress ( MBI ) . Quality of life ( EQ-5D ) was measured as a secondary outcome . Intention-to-treat analyses were performed . Results Of the 213 participants , 177 ( 83.1 % ) completed the baseline and follow-up question naires ; missing data were statistically imputed . Of all 107 participants in the intervention group , 9 % ( n = 10 ) dropped out before the course started and 55 % ( n = 59 ) completed the whole course . Among all participants , the intervention was effective in reducing symptoms of depression ( CES-D : Cohen ’s d = 0.50 , 95 % confidence interval ( CI ) 0.22 - 0.79 ; MDI : d = 0.33 , 95 % CI 0.03 - 0.63 ) and anxiety ( SCL-A : d = 0.42 , 95 % CI 0.14 - 0.70 ; HADS : d = 0.33 , 95 % CI 0.04 - 0.61 ) as well as in enhancing quality of life ( d = 0.31 , 95 % CI 0.03 - 0.60 ) . Moreover , a higher percentage of patients in the intervention group experienced a significant improvement in symptoms ( CES-D : odds ratio [ OR ] = 3.5 , 95 % CI 1.9 - 6.7 ; MDI : OR 
    Output:
    
agent
***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: Abstract OBJECTIVE : Assess impact of a computer-based patient support system on quality of life in younger women with breast cancer , with particular emphasis on assisting the underserved . DESIGN : R and omized controlled trial conducted between 1995 and 1998 . SETTING : Five sites : two teaching hospitals ( Madison , Wis , and Chicago , Ill ) , two nonteaching hospitals ( Chicago , Ill ) , and a cancer re source center ( Indianapolis , Ind ) . The latter three sites treat many underserved patients . PARTICIPANTS : Newly diagnosed breast cancer patients ( N=246 ) under age 60 . INTERVENTIONS : Experimental group received Comprehensive Health Enhancement Support System ( CHESS ) , a home-based computer system providing information , decision-making , and emotional support . MEASUREMENTS AND MAIN RESULTS : Pretest and two posttest surveys ( at two- and five-month follow-up ) measured aspects of participation in care , social/information support , and quality of life . At two-month follow-up , the CHESS group was significantly more competent at seeking information , more comfortable participating in care , and had greater confidence in doctor(s ) . At five-month follow-up , the CHESS group had significantly better social support and also greater information competence . In addition , experimental assignment interacted with several indicators of medical underservice ( race , education , and lack of insurance ) , such that CHESS benefits were greater for the disadvantaged than the advantaged group . CONCLUSIONS : Computer-based patient support systems such as CHESS may benefit patients by providing information and social support , and increasing their participation in health care . These benefits may be largest for currently underserved population Background There has been increasing interest in the ability of the internet to produce behaviour change . The focus of this study was to describe program exposure across three intervention groups from a r and omised trial ( RT ) comparing traditional face-to-face , internet-mediated ( combined internet plus face-to-face ) , and internet-only program delivery . Methods Baseline and immediately post-intervention survey data , and exposure rates from participants that commenced the RT were included ( n = 192 ) . Exposure was defined as either face-to-face attendance , website usage , or a combination of both for the internet-mediated group . Characteristics of participants who were exposed to at least 75 % of the program material were explored . Descriptive analysis and logistical regression were used to examine differences between groups for program exposure . Results All groups showed decrease in program exposure over time . Differences were also observed ( χ2 = 10.37 , p < 0.05 ) , between intervention groups . The internet-mediated ( OR = 2.4 , 95 % CI 1.13–5.1 ) and internet-only ( OR = 2.96 , 95 % CI 1.38–6.3 ) groups were more likely to have been exposed to at least 75 % of the program compared to the face-to-face group . Participants with high physical activity self-efficacy were 1.82 ( 95 % CI 1.15–2.88 ) times more likely to have been exposed to 75 % of the program , and those allocated to the face-to-face group were less likely to have attended 75 % of the face-to-face sessions if they were classified as obese ( OR = 0.21 95 % CI 0.04–0.96 ) . Conclusion These results suggest that the internet groups were as effective as the face-to-face delivery mode in engaging participants in the program material . However , different delivery methods may be more useful to different sub- population s. It is important to explore which target groups that internet-based programs are best suited , in order to increase their impact CONTEXT Rapid increases in access to the Internet have made it a viable mode for public health intervention . No controlled studies have evaluated this re source for weight loss . OBJECTIVE To determine whether a structured Internet behavioral weight loss program produces greater initial weight loss and changes in waist circumference than a weight loss education Web site . DESIGN R and omized , controlled trial conducted from April to December 1999 . SETTING AND PARTICIPANTS Ninety-one healthy , overweight adult hospital employees aged 18 to 60 years with a body mass index of 25 to 36 kg/m(2 ) . Analyses were performed for the 65 who had complete follow-up data . INTERVENTIONS Participants were r and omly assigned to a 6-month weight loss program of either Internet education ( education ; n = 32 with complete data ) or Internet behavior therapy ( behavior therapy ; n = 33 with complete data ) . All participants were given 1 face-to-face group weight loss session and access to a Web site with organized links to Internet weight loss re sources . Participants in the behavior therapy group received additional behavioral procedures , including a sequence of 24 weekly behavioral lessons via e-mail , weekly online su bmi ssion of self-monitoring diaries with individualized therapist feedback via e-mail , and an online bulletin board . MAIN OUTCOME MEASURES Body weight and waist circumference , measured at 0 , 3 , and 6 months , compared the 2 intervention groups . RESULTS Repeated- measures analyses showed that the behavior therapy group lost more weight than the education group ( P = .005 ) . The behavior therapy group lost a mean ( SD ) of 4.0 ( 2.8 ) kg by 3 months and 4.1 ( 4.5 ) kg by 6 months . Weight loss in the education group was 1.7 ( 2.7 ) kg at 3 months and 1.6 ( 3.3 ) kg by 6 months . More participants in the behavior therapy than education group achieved the 5 % weight loss goal ( 45 % vs 22 % ; P = .05 ) by 6 months . Changes in waist circumference were also greater in the behavior therapy group than in the education group at both 3 months ( P = .001 ) and 6 months ( P = .005 ) . CONCLUSIONS Participants who were given a structured behavioral treatment program with weekly contact and individualized feedback had better weight loss compared with those given links to educational Web sites . Thus , the Internet and e-mail appear to be viable methods for delivery of structured behavioral weight loss programs Online therapy offers many advantages over face-to-face therapy . Interapy includes psychoeducation , screening , effect measures , and a protocol -driven treatment via the Internet for people suffering from posttraumatic stress . The present article reports the results of a controlled trial on the Internet-driven treatment of posttraumatic stress and grief in a group of people who manifested mild to relatively severe trauma symptoms . Participants in the treatment condition ( n=69 ) improved significantly more than participants in the waiting-list control condition ( n=32 ) on trauma-related symptoms and general psychopathology . The effect sizes were large . On most subscales , more than 50 % of the treated participants showed reliable change and clinical ly significant improvement , with the highest percentages being found for depression and avoidance Background Most work sites engage in some form of health promotion programming design ed to improve worker health and reduce health care costs . Although these programs have typically been delivered through combinations of seminars and print material s , workplace health promotion programs are increasingly being delivered through the Internet . Objective The purpose of this research was to evaluate the effectiveness of a Web-based multimedia health promotion program for the workplace , design ed to improve dietary practice s , reduce stress , and increase physical activity . Methods Using a r and omized controlled trial design with pretest-posttest comparisons within each group , 419 employees of a human re sources company were r and omly assigned to the Web-based condition or to a condition that provided print material s on the same topics . All subjects were assessed at pretest and posttest through an online question naire containing multiple measures of health behavior and attitudes . The test period was 3 months . Question naire data were analyzed mainly by analysis of covariance and t tests . Results Retention rates were good for both groups—85 % for the Web-based group and 87 % for the print group . Subjects using the Web-based program performed significantly better than the print group on Attitudes Toward a Healthful Diet ( F1,415 = 7.104 , P = .008 ) and Dietary Stage of Change ( F1,408 = 6.487 , P = .01 ) , but there were no significant group differences on the five other dietary measures . Both groups also showed improvement from pretest to posttest on most dietary measures , as indicated by significant t tests . Within the Web-based group , dosage analyses showed significant effects of the number of times the subject accessed the program on measures of Dietary Self-Efficacy ( F2,203 = 5.270 , P = .003 ) , Attitudes Toward a Healthful Diet ( F2,204 = 2.585 , P = .045 ) , and Dietary Stage of Change ( F2,200 = 4.627 , P = .005 ) . No significant differences were found between the two groups on measures of stress or physical activity , although t tests of pretest-posttest changes indicated that both groups improved on several of these measures . The Web-based group gave significantly higher ratings to the program material s than the print group on all health topics and in their overall evaluation ( F1,410 = 9.808 , P = .002 ) . Conclusions The Web-based program was more effective than print material s in producing improvements in the areas of diet and nutrition but was not more effective in reducing stress or increasing physical activity . The higher ratings given to the Web-based program suggest that workers preferred it to the print material s. Both groups showed numerous pretest-posttest improvements in all health topics , although such improvements might be attributable in part to a Hawthorne effect . Results suggest that a multimedia Web-based program can be a promising means of delivering health promotion material to the workforce , particularly in the area of diet and nutrition Background Psychoeducational programs are increasingly being delivered over the Internet . We created an Internet-based , cognitive therapy , self-help program to be used as a st and -alone intervention for mild-to-moderate depression , or as an adjunct to traditional services for more severe depression . Objective To evaluate the effectiveness of a web-based intervention program to reduce depression in a r and omized , controlled trial Methods In a private , nonprofit health maintenance organization , we mailed recruitment brochures to two population s : depressed adults ( n = 6994 ) who received traditional medical services for depression , and an age/gender matched sample of nondepressed adults ( n = 6996 ) . Participants consenting to the study were r and omized to either the experimental Web site ( n = 144 ) , or a no-access control group ( n = 155 ) . Participants in both groups were free to obtain nonexperimental , usual care services for their depression . All participants completed an on-line version of the Center for Epidemiological Studies Depression Scale ( CES-D ) at enrollment and at 4- , 8- , 16- and 32-weeks after enrollment . Mean intake scores were in the severely depressed range . 74 % of participants completed at least one follow-up assessment . Unfortunately , most intervention participants accessed the Internet site infrequently . Results We failed to find an effect for the Internet program across the entire sample . However , post-hoc , exploratory analyses revealed a modest effect among persons reporting low levels of depression at intake . Conclusions The negative results might have result ed from infrequent patient use of the Internet site , or a more seriously depressed sample than the intervention was intended to help . Future studies should focus on recruiting persons with mild to moderate levels of depression , and on increasing participant use of the Internet site Background Self-help therapies are often effective in reducing  mental health problems .  We developed a new Web-based self-help intervention based on problem-solving therapy , which may be used for people with different types of comorbid problems : depression , anxiety , and work-related stress . Objective The aim was to study whether a Web-based self-help intervention is effective in reducing depression , anxiety , and work-related stress ( burnout ) . Methods A total of 213 participants were recruited through mass media and r and omized to the intervention ( n = 107 ) or a waiting list control group ( n = 106 ) . The Web-based course took 4 weeks . Every week an automated email was sent to the participants to explain the contents and exercises for the coming week . In addition , participants were supported by trained psychology students who offered feedback by email on the completed exercises . The core element of the intervention is a procedure in which the participants learn to approach solvable problems in a structured way . At pre-test and post-test , we measured the following primary outcomes : depression ( CES-D and MDI ) , anxiety ( SCL-A and HADS ) , and work-related stress ( MBI ) . Quality of life ( EQ-5D ) was measured as a secondary outcome . Intention-to-treat analyses were performed . Results Of the 213 participants , 177 ( 83.1 % ) completed the baseline and follow-up question naires ; missing data were statistically imputed . Of all 107 participants in the intervention group , 9 % ( n = 10 ) dropped out before the course started and 55 % ( n = 59 ) completed the whole course . Among all participants , the intervention was effective in reducing symptoms of depression ( CES-D : Cohen ’s d = 0.50 , 95 % confidence interval ( CI ) 0.22 - 0.79 ; MDI : d = 0.33 , 95 % CI 0.03 - 0.63 ) and anxiety ( SCL-A : d = 0.42 , 95 % CI 0.14 - 0.70 ; HADS : d = 0.33 , 95 % CI 0.04 - 0.61 ) as well as in enhancing quality of life ( d = 0.31 , 95 % CI 0.03 - 0.60 ) . Moreover , a higher percentage of patients in the intervention group experienced a significant improvement in symptoms ( CES-D : odds ratio [ OR ] = 3.5 , 95 % CI 1.9 - 6.7 ; MDI : OR 
    Output:
    