emergency department ( ed ) is considered as the heart of the hospital ( 1 , 2 ) .
essentiality of provision of urgent , proper , and effective complex services makes ed a unique and important section of the hospital ( 1 , 3 ) .
, the whole system might offer reliable services to patients ( 4 , 5 ) .
many patients are referred to the ed as the first part of hospital to assess and treat patients . referred patients to ed
usually needs provision of urgent aids ; hence , proper perception of the situation by the staff is of paramount importance ( 4 , 6 ) .
moreover , ministry of health of iran requires realization of minimum criteria by eds of private and public hospitals before being eligible for practical assessments .
thus , failing to achieve these minimum criteria disqualifies the standard status of the hospital ( 7 ) .
many studies have pointed out decent facilities and provision of required equipment as essential factors of an ed for proper reaction to emergency situation ( 8) . on the other hand , efficient procedure design and reducing waiting time are other important factors for an ed ( 9 ) .
inefficiency of procedures at three stages of admission in the ed , provision of emergency services , and patient discharge is due to long waiting time in ed . along with negative effects on improvement of patient s conditions
long procedure of providing medical services to a patient in ed lessens the chance of other probable referrals for receiving the services and increases mortality rate and dissatisfaction ( 1 , 10 , 11 ) . results by a study in the united states showed that overcrowded ed , caused by slow provision of services , limits the capacity of the ed and quality of the service .
the study also pointed out a negative association between waiting time and patients satisfaction with the services .
that is , the higher the waiting time is , the poorer the quality of services would be perceived ( 12 ) .
apparently , suitable facility architecture of the ed is an effective factor on waiting time . regarding the absence of a study on the association between accesses to ed and waiting time , the present study aimed to investigate the association based on the time and physical indices , dictated by iran ministry of health .
the present study aimed to discover the association between physical access in ed and the waiting time before being served in tehran hospitals
a total of 240 samples were randomly selected from six hospitals : three public hospitals ( loghman - e - hakim , farabi , and amir alam ) and three private hospitals ( resalat , atieh , and aban ) .
the first one consisted of two parts : hospital and eds information ; and information of architecture and physical design of the ed , based the defined standards by the ministry of health ( 7 ) . the second checklist measured pace of emergency services provision and was used to compare the actual records and the dictated standards by the ministry of health .  
this cross - sectional study was performed in 2011 in six selected hospitals in tehran , , iran .
the hospitals were selected after consulting with the ministry of health , treatment , and medical education .
the criteria for selecting hospitals were as following : 1 ) having secured first - grade services certificate for two consecutive years ; 2 ) having secured first - grade services certificate for icu and ccu ; 3 ) running quality improvement to promote the quality of the services and supporting pertinent research work ; and 4 ) a running ed .
participants were selected orderly and randomly . finally , 240 patients from six hospitals were recruited , while waiting time was obtained from their medical records .
the sample size was calculated using the following formula : 
 n = 
 0.5ln[(1+r)/(1-r ) ] 
  where r is correlation coefficient ,  = 0.05 , and power = 80% .
the checklist on hospitals and eds had eight questions about general information of hospital and ed and number of referrals to the ed and triage ward .
the checklist of architecture and physical design dealt with different aspects of location of ed in the hospital , access from outside , location of triage ward , access to triage ward , location of signs , access ways , and emergency exits .
it consisted of 46 questions with five choices : quite bad , bad , not good not bad , good , and quite good that corresponded to 0 , 1 , 2 , 3 , and 4 , respectively .
the checklists were filled by the researcher at site .   the checklist on work procedure in ed consisted of two questions .
regarding delay time , 240 files ( 40 files per hospital ) were randomly selected .
data on waiting time until first medical check and hospitalization term ( interval between admission and discharge ) was gathered from the patients records . to ascertain validity of the checklists ,
they were presented to ten members of faculty boards of universities and managers of the hospitals with pertinent experience . according to cronbach
descriptive statistics were used for data analyzing ( spss 18 , spss inc . , chicago , il , usa ) . in addition , the interval between the admission to the ed and discharge from ed was measured in minutes . for describing access way and physical design of the ward , the pearson and spearman s correlation coefficients were used . to observe ethical codes in performing the study ,
the authorities were informed beforehand and the results were presented to the hospitals while keeping confidentiality of the information .
a total of 240 samples were randomly selected from six hospitals : three public hospitals ( loghman - e - hakim , farabi , and amir alam ) and three private hospitals ( resalat , atieh , and aban ) .
two checklists were used for data gathering . the first one consisted of two parts : hospital and eds information ; and information of architecture and physical design of the ed , based the defined standards by the ministry of health ( 7 ) .
the second checklist measured pace of emergency services provision and was used to compare the actual records and the dictated standards by the ministry of health .
this cross - sectional study was performed in 2011 in six selected hospitals in tehran , , iran .
the hospitals were selected after consulting with the ministry of health , treatment , and medical education .
the criteria for selecting hospitals were as following : 1 ) having secured first - grade services certificate for two consecutive years ; 2 ) having secured first - grade services certificate for icu and ccu ; 3 ) running quality improvement to promote the quality of the services and supporting pertinent research work ; and 4 ) a running ed .
participants were selected orderly and randomly . finally , 240 patients from six hospitals were recruited , while waiting time was obtained from their medical records .
the sample size was calculated using the following formula : 
 n = 
 0.5ln[(1+r)/(1-r ) ] 
  where r is correlation coefficient ,  = 0.05 , and power = 80% .
the checklist on hospitals and eds had eight questions about general information of hospital and ed and number of referrals to the ed and triage ward .
the checklist of architecture and physical design dealt with different aspects of location of ed in the hospital , access from outside , location of triage ward , access to triage ward , location of signs , access ways , and emergency exits .
it consisted of 46 questions with five choices : quite bad , bad , not good not bad , good , and quite good that corresponded to 0 , 1 , 2 , 3 , and 4 , respectively .
the checklists were filled by the researcher at site .   the checklist on work procedure in ed consisted of two questions .
regarding delay time , 240 files ( 40 files per hospital ) were randomly selected .
data on waiting time until first medical check and hospitalization term ( interval between admission and discharge ) was gathered from the patients records . to ascertain validity of the checklists ,
they were presented to ten members of faculty boards of universities and managers of the hospitals with pertinent experience . according to cronbach s alpha , reliability of the checklists
descriptive statistics were used for data analyzing ( spss 18 , spss inc . , chicago , il , usa ) . in addition , the interval between the admission to the ed and discharge from ed was measured in minutes . for describing access way and physical design of the ward , the pearson and spearman s correlation coefficients were used . to observe ethical codes in performing the study ,
the authorities were informed beforehand and the results were presented to the hospitals while keeping confidentiality of the information .
out of six hospitals , four had employed a bachelor of nursing in charge of triage , one had an emergency technician , and one did not run triage ward .
eds were located in the ground floor in three hospitals and outside the main building in three others .
furthermore , during the research period ( spring and summer of 2010 ) , amir alam hospital with 1450 referral and farabi hospital with 70000 referral had the minimum and maximum number of patients , respectively ( figure 1 ) .
based on the results , mean score of the location of triage ward for the public and private hospitals was 2.33 and 2.53 , respectively .
the association between the waiting time from admission through first medical check and location of triage in hospitals is presented in table 3 .
correlation coefficients of the mean of waiting time ( from admission through first medical check ) and score of triage ward location in all hospital and private hospitals under study were 0.3 and 0.5 respectively ( p < 0.001 ) .
in addition , mean score of access to triage ward for the public hospital was 2.66 and 3.33 for the private hospitals .
the data regarding the association of interval between admission to first medical check with access to triage in hospitals is presented in table 3 .
correlation coefficients of mean waiting time ( from admission to first medical check ) and score of access to triage ward in all hospitals , private , and private hospitals were 0.006 , -0.03 , and 0.12 , respectively .
based on the results , mean score of access to triage ward in public hospital is 2.66 and 3.33 in private hospitals .
the association between the waiting time from admission to first medical check and access to triage in hospitals is presented in table 4 .
correlation coefficients of mean waiting time ( from admission to first medical check ) and score of access to triage ward in all hospitals , private , and public hospitals were respectively -0.23 ( p < 0.001 ) , -0.28 ( p = 0.002 ) , and -0.30 ( p = 0.001 ) .
based on the results , mean scores of access to triage ward in the public and the private hospitals were 2.44 and 2.76 , respectively .
the association between the waiting time from admission to first medical check and access to ed in hospitals is presented in table 5 .
correlation coefficients of mean waiting time ( from admission to first medical check ) and score of access to ed in all hospitals and private hospitals were 0.35 and 0.50 ( p = 0.001 ) , respectively .
six hospitals ( 3 publics and 3 privates ) were studied for access to ed and its association with waiting time for the patients .
correlation coefficient for association of the mean of interval between admission and first medical check with score of triage ward location for all hospitals and the private hospitals were 0.3 and 0.5 , respectively ( p < 0.001 ) .
correlation coefficient between mean interval , from admission to first medical check , and score of access to triage ward for all the hospitals , public hospitals , and private hospitals were 0.006 , -0.03 , and 0.12 , respectively , however , none of the association were significant .
correlation coefficient between mean interval , from admission to first medical check , and score of access to triage ward for all the hospital , the private hospitals and the public hospitals were -0.23 ( p < 0.001 ) , -0.28 ( p = 0.002 ) , and -0.30 ( p = 0.001 ) , respectively .
the data showed significant association between waiting time in ed and score of access to triage ward .
correlation coefficient between mean interval , from admission to first medical check , and score of access to ed for all the hospital and the private hospitals were 0.35 and 0.50 , respectively ( p < 0.001 ) . regarding the public hospitals , the association was not significant .
the present study revealed that mean waiting time to receive first medical care for the public and private hospitals were 5.4 and 4.84 minutes , respectively .
in addition , mean of the patients stays in ed in the public and private hospitals were 90.8 and 94.6 minutes , respectively . in this way ,
conducted a comparative study on medical emergency system in germany , france , the united states , australia , and iran .
they assessed variables such as general organization of emergency system , human force , communications , transportation , training the staff , and public trainings .
the comparison took economic as well as social conditions and available facilities into account and proposed an emergency medical system model for iran ( 14 ) .
jalili surveyed patients waiting time in ed for selected hospitals in tehran , which were affiliated to welfare state organization .
the survey focused on five elements including the waiting time from triage to first medical intervention , waiting time for diagnostic measures , time from completion of diagnosing to re - examination , time from re - examination to secondary medical intervention , and time from completion of secondary medical intervention to discharge from the ward ( 15 ) .
the role of pace and quality of services of children ed in a clinic affiliated with iran university of medical sciences was the subject of tabibi et al . who measured waiting time , provision of the services , and satisfaction with the services and compared the results with international standards ( 16 ) .
furthermore , the results showed significant association of interval between admission and first medical check with location of triage in the private hospitals ( p < 0.001 ) . regarding the public hospitals , the association was not significant , which was consistent with o'connor ( 17 ) .
cheraghi et al . stated that mean waiting time , from triage to discharge from ed , was 73.1 minutes ( 18 ) .
the results demonstrated significant association between access to triage ward and waiting time in ed for all the studied hospitals .
they argued that waiting time was highly changeable as 5% of the patients spent 49 minute or longer in triage ward for receiving service .
moreover , the interval between admission to first medical check had no significant association with access to triage ward .
( 20 ) , who argued that fast triage service reduces waiting time for first medical check .
apparently , access to triage ward and provision of triage service at entrance to ed affects total spent time in ed , but our results showed that waiting time in triage was not effective in providing services faster .
majority of the referrals to eds of the hospitals needed medical attention ; hence , the long waiting time is not defendable and is in contrary to the executive guidelines of optimizing ed . generally , the type of the hospital ( private or public ) is an effective factor in the waiting time ( 21 ) . in addition
, our results showed positive and significant association between access to the facilities and waiting time in the private hospitals .
however , this association was not significant in the public hospitals . there is a need to review national standards regarding waiting time for receiving medical services in ed .
evidently , ministry of health , treatment , and medical education is in charge of health system .
therefore , the ministry needs to take measures to lead the managers of ed toward improvement of internal affairs , based on specific conditions and facilities .
moreover , the measures require support from middle and top managers of hospitals to achieve favorable results . moreover ,
improvement of triage service and waiting time for the services in ed depends on reviewing work procedure in the eds .
 background : the relation between physical access in emergency department (ed ) and the time patients have to wait before being served is unknown.objectives:our objective was to discover the associations between the physical access in ed and the time patients had to wait before receiving services.materials and methods : in this cross - sectional study , statistical society comprised two portions , namely , public hospitals eds and referred patients to the ward . data on waiting time for 240 patients in six public and private hospitals were gathered . in addition , physical condition of eds was inspected by visiting these hospitals . 
 a designed checklist , based on the introduced physical space , was filled for each hospital . 
 results of the checklist were scored using likert s five - points scale and spearman and pearson 's correlation coefficient were applied to determine the relationship between physical access and waiting time.results:the correlation between the waiting time beginning from the very moment of stepping into the ward until first examination and physical condition at the triage wards in private ( p < 0.001 ) and public hospitals ( p > 0.05 ) was not significant . 
 the waiting interval , beginning from the very moment of stepping into the ward until first examination and access to physical space of ed , was significant for private hospitals ( p < 0.001 ) and insignificant for public hospitals ( p > 0.05).conclusions : according to the results , there was a direct correlation between access to physical space in ed and waiting time . 
 in addition , improving the physical access did not necessarily result in shorter waiting time . therefore , to improve triage process , improvement of waiting time indices , and modifying forms of work process in ed are recommended . 
1. Background
2. Objectives
3. Materials and Methods
3.1. Settings and Participants
3.2. The Instrument
3.3. Data Gathering and Analysis
4. Results
5. Discussion