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PUBLIC HEALTH RESEARCH
Year : 2015  |  Volume : 7  |  Issue : 4  |  Page : 165-169

Risk factors of delay proportional probability in diphtheria-tetanus-pertussis vaccination of Iranian children; Life table approach analysis


1 Department of Diseases Control, Health Vic Chancellor, Arak University of Medical Sciences, Arak, Iran
2 Department of Epidemiology and Biostatistics, School of Health, Qom University of Medical Sciences, Qom, Iran
3 Center for Communicable Disease Control, Ministry of Health and Medical Education, Tehran, Iran
4 Department of Epidemiology and Biostatistics, Qom University of Medical Sciences, Qom, Iran
5 Health Promotion research Center, Department of Epidemiology and biostatistics, Zahedan University of Medical Sciences, Zahedan, Iran

Correspondence Address:
Hossein Ansari
Health Promotion research Center, Department of Epidemiology and biostatistics, Zahedan University of Medical Sciences, Zahedan
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-777X.170503

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Despite success in expanded program immunization for an increase in vaccination coverage in the children of world, timeliness and schedule of vaccination remains as one of the challenges in public health. This study purposed to demonstrate the related factors of delayed diphtheria-tetanus-pertussis (DTP) vaccination using life table approach. A historical cohort study conducted in the poor areas of five large Iran cities. Totally, 3610 children with 24-47 months old age who had documented vaccination card were enrolled. Time of vaccination for the third dose of DTP vaccine was calculated. Life table survival was used to calculate the proportional probability of vaccination in each time. Wilcoxon test was used for the comparison proportional probability of delayed vaccination based on studies factors. The overall median delayed time for DTP3 was 38.52 days. The Wilcoxon test showed that city, nationality, education level of parents, birth order and being in rural areas are related to the high probability of delay time for DTP3 vaccination (P < 0. 001). Moreover, child gender and parent's job were not significant factors (P > 0.05). Being away from the capital, a high concentration of immigrants in the city borders with a low socioeconomic class leads to prolonged delay in DTP vaccination time. Special attention to these areas is needed to increase the levels of parental knowledge and to facilitate access to the health services care.


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2008 Journal of Global Infectious Diseases | Published by Wolters Kluwer - Medknow
Online since 10th December, 2008