[Case analysis of telephone interview application effect in Beijing].
OBJECTIVE
To apply Computer Assisted Telephone Interview (CATI) in evaluation on effectiveness of non-communicable diseases control and prevention among general population.


METHODS
Totally 2450 permanent residents aged 15 to 69 years old were interviewed by telephone in Xicheng District and Changping District, Beijing. Telephone numbers were selected by simple random sampling. CATI was used to collect data. Focus group interview was used to interview telephone interviewers in order to analyze the reason of the midway refusal.


RESULTS
93,524 telephone numbers were dialed. Survey efficiency, response rate and successful completion rate were 3.8%, 26.2% and 75.1%, respectively. The main cause resulting in low survey efficiency and response rate were no answer, busy, and refusal to answer at the beginning. The main cause which influenced successful completion rate was midway refusal to answer.


CONCLUSIONS
Successful completion rate in this survey was high, so CATI is suitable for this survey. However, survey efficiency and response rate were too low. The emphasis was to reduce the proportion of no answer, busy and refusal in the beginning in order to improve the efficiency of this survey.
Chinese Center for Disease Control and Prevention, Beijing 102206, China. qixiao@chinacdc.cn
Xiao
X
Qi
Chinese Center for Disease Control and Prevention, Beijing 102206, China.
Yong
Y
Zhang
Chinese Center for Disease Control and Prevention, Beijing 102206, China.
Xia
X
Wan
Chinese Center for Disease Control and Prevention, Beijing 102206, China.
Wenjing
W
Zheng
Chinese Center for Disease Control and Prevention, Beijing 102206, China.
Jinfang
J
Sun
Chinese Center for Disease Control and Prevention, Beijing 102206, China.
Gonghuan
G
Yang
D000293:Adolescent; D000328:Adult; D000368:Aged; D002681:China; D002908:Chronic Disease; D002947:Cities; D005260:Female; D006801:Humans; D007407:Interviews as Topic / Q000379:methods / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D011795:Surveys and Questionnaires; D055815:Young Adult