***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: AIM To determine prevalence of  known diabetes in those more than 20 years of age in Chennai city . METHODOLOGY Urban population was selected for the survey . Assuming the prevalence of known diabetes as 5.0 % in those aged > 20 years , the cluster sample size calculated to estimate it with 95 % CI and + /- 10 % precision , was 25800 individuals of all ages . This population obtained from 200 households in each of 30 r and omly selected corporation divisions of the city , was surveyed by social workers by house to house enquiry .  General information and health status of every member of the household were recorded on prescribed forms . This survey was conducted during January-July , 1998 . RESULTS Among 26,066 individuals of all ages 779 had known diabetes and 99.4 % of them had type 2 diabetes .  The prevalence of known diabetes was 2.9 % for all ages and both sexes combined . Crude and age-st and ardized prevalence was 4.9 % ( 95 % CI 4.6 - 5.2 ) for those aged > 20 years . The st and ardized prevalence was 10.5 % ( 95 % CI 9.8 - 11.2 ) in those aged > or = 40 years . The prevalence was significantly high ( P < 0.05 ) in females . CONCLUSION The prevalence of known diabetes was low in total population but increased in those aged > 20 and further increased in those aged > or = 40 years . The causes for high prevalence in > or = 40 year age group needs to be explored in this population AIMS To compare the impact on weight and exercise of a 2-year church-based diabetes risk reduction programme in four churches in South Auckl and , New Zeal and . METHODS A prospect i ve non-r and omized controlled study of a modular lifestyle and diabetes awareness intervention programme applying community development principles . The study involved four complete church congregations , two Samoan and two Tongan , with 516 participants at commencement . Risk of Type 2 diabetes is high among both ethnic groups . RESULTS Overall , 285 subjects were available for their second assessment . In one intervention church , weight gain was controlled ( vs. control 0 + /- 4.8 vs. + 3.1 + /- 9.8 kg , respectively ; P=0.05 ) , diabetes knowledge ( + 46 + /- 26 % vs. + 4 + /- 17 % ; P<0.001 ) and regular exercise ( at least 3 days per week : + 22 % vs. -8 % ; P=0.032 ) increased and readiness to change weight ( P=0.007 ) shifted towards maintenance ( e.g. maintenance + 41 % vs. + 8 % , respectively ) . The other intervention church increased diabetes knowledge ( + 19 + /- 24 vs. + 8 + /- 25 ; P<0.024 ) , but no other significant personal changes occurred . Attendance and perceived utility of the programme were greater in the first intervention church . CONCLUSIONS A moderate intensity , community-based , structured diabetes awareness and lifestyle programme can reduce diabetes risk , but increasing diabetes knowledge alone is not necessarily associated with healthier lifestyle choices . Continuous and detailed monitoring of penetration of interventions may be essential to help guide the timing of interventions and identify the need for additional strategies to increase participation and motivation AIMS To evaluate the acceptability and impact of a pilot diabetes awareness and exercise programme in a mainly Polynesian workforce . METHOD Comparison of change in question naire and anthropometric measurements in two hospital ancillary workforces . One group ( n = 108 ) received one  community diabetes educator presentation , one video presentation and a 4 month exercise programme .  The other group ( n = 99 ) served as controls . RESULTS Baseline diabetes knowledge was poor ( total score 26 ( SD 13 % ) ) and subjects were largely unfit with a high body mass index ( 31.5 ( 7.1 ) kg/m2 ) . The exercise sessions  were well attended , although attendance declined over the 4 months . Increased diabetes knowledge was retained in the intervention group after 6 months when compared with controls ( total score 35(14)% vs 26(12)% respectively , p < 0.001 ) . One month after the termination of the programme , the proportion reporting regular exercise activity ( at least 30 minutes for 3 days per week ) had increased by 2 % in the intervention group but declined by 9 % in the control group ( p < 0.05 ) . CONCLUSIONS Diabetes knowledge and exercise can be increased in unfit subjects by the combination of culturally tailored exercise techniques and community diabetes educator/video presentations 
    Output:
    
A range of training , management , funding and organizational barriers existed in the implementation of these lay educator programmes .
Conclusions .
Peer-to-peer support and education programmes in diabetes have been considered useful in New Zeal and .