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J Res Health Sci. 2010;10(2): 98-103.
PMID: 22911931
  Abstract View: 98
  PDF Download: 29

Original Article

Birth Distance Influential Factors: A Multilevel Recurrent Events Approach

Siavash Mirzaee Ramhormozi, Abbas Moghimbeigi*, Hossein Mahjub, Ali Reza Soltanian
*Corresponding Author: Email: moghimb@yahoo.com

Abstract

Background: The study was developed in order to find a subset of potential factors, which affect birth distance pattern, regarding consideration on correlation of events of birth in a family and correlation within clusters/centers which other studies omit these correlations.

Methods: Referring to documents that were registered for family in the health care centers on socio-economical zone, we consider the families with at least one successful birth. Data were drawn from four health care centers, which selected via 27-health center in Hamedan City, western Iran, each from a socio-economic zone. It was expected, same socio-economic status family have same specific birth distance and a family follows a specific pattern. The multilevel recurrent approach was conducted to analyze the sample. The sample was 480 families and 1115 birth events occurred in these families.

Results: The final step model shows that significant factors on the birth distance time were mothers job (P=0.018). The random effect of second level (clusters/centers) was significant (P=0.038). In other words, the socio-economic of family affects on the birth distance patterns. Other potential variables were not significantly affected birth distances and were deleted from the final model.

Conclusions: There are many potential factors, which may affect to birth distance, but multilevel recurrent event model has a better fit to data because of frailty and center effects. Application of other model such as Cox and frailty models may result in misleading reports.

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Submitted: 29 Jun 2011
Revision: 29 Jun 2011
ePublished: 31 Aug 2023
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