E-ISSN 2756-4843 | ISSN 0794-5698
 

Research Article 


Factors Determining Birth Intervals: A Multilevel Mixed Effect Parametric Survival Approach

Olakiitan Ibukun Adeniyi, Ifeoluwa Ruth Olonijolu, Adesupo Adeoye Akinrefon.

Abstract
Interval between births plays an important role in maternal health as well as child health. This study applies the methodology of Flexible parametric survival models to data on successive births among Nigeria women using the dataset from 2018 National Demographic Health survey. The flexible parametric survival model with Weibull baseline distribution was found to be the best among other fitted baseline distributions. The factors, zone of residence, educational qualification, religion, economic status and age at first birth were found to be significant in predicting the birth intervals. It was found out that random effect parameter indicates that the interval between successive births are similar from the same woman.

Key words: birth intervals, baseline hazard, mixed effect, flexible parametric model, AIC.


 
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How to Cite this Article
Pubmed Style

Adeniyi OI, Olonijolu IR, Akinrefon AA. Factors Determining Birth Intervals: A Multilevel Mixed Effect Parametric Survival Approach. Nig. J. Basic Appl. Sci.. 2020; 28(2): 29-35. doi:10.4314/njbas.v28i2.4


Web Style

Adeniyi OI, Olonijolu IR, Akinrefon AA. Factors Determining Birth Intervals: A Multilevel Mixed Effect Parametric Survival Approach. http://www.njbas-udus.com/?mno=96064 [Access: March 25, 2021]. doi:10.4314/njbas.v28i2.4


AMA (American Medical Association) Style

Adeniyi OI, Olonijolu IR, Akinrefon AA. Factors Determining Birth Intervals: A Multilevel Mixed Effect Parametric Survival Approach. Nig. J. Basic Appl. Sci.. 2020; 28(2): 29-35. doi:10.4314/njbas.v28i2.4



Vancouver/ICMJE Style

Adeniyi OI, Olonijolu IR, Akinrefon AA. Factors Determining Birth Intervals: A Multilevel Mixed Effect Parametric Survival Approach. Nig. J. Basic Appl. Sci.. (2020), [cited March 25, 2021]; 28(2): 29-35. doi:10.4314/njbas.v28i2.4



Harvard Style

Adeniyi, O. I., Olonijolu, . I. R. & Akinrefon, . A. A. (2020) Factors Determining Birth Intervals: A Multilevel Mixed Effect Parametric Survival Approach. Nig. J. Basic Appl. Sci., 28 (2), 29-35. doi:10.4314/njbas.v28i2.4



Turabian Style

Adeniyi, Olakiitan Ibukun, Ifeoluwa Ruth Olonijolu, and Adesupo Adeoye Akinrefon. 2020. Factors Determining Birth Intervals: A Multilevel Mixed Effect Parametric Survival Approach. Nigerian Journal of Basic and Applied Sciences, 28 (2), 29-35. doi:10.4314/njbas.v28i2.4



Chicago Style

Adeniyi, Olakiitan Ibukun, Ifeoluwa Ruth Olonijolu, and Adesupo Adeoye Akinrefon. "Factors Determining Birth Intervals: A Multilevel Mixed Effect Parametric Survival Approach." Nigerian Journal of Basic and Applied Sciences 28 (2020), 29-35. doi:10.4314/njbas.v28i2.4



MLA (The Modern Language Association) Style

Adeniyi, Olakiitan Ibukun, Ifeoluwa Ruth Olonijolu, and Adesupo Adeoye Akinrefon. "Factors Determining Birth Intervals: A Multilevel Mixed Effect Parametric Survival Approach." Nigerian Journal of Basic and Applied Sciences 28.2 (2020), 29-35. Print. doi:10.4314/njbas.v28i2.4



APA (American Psychological Association) Style

Adeniyi, O. I., Olonijolu, . I. R. & Akinrefon, . A. A. (2020) Factors Determining Birth Intervals: A Multilevel Mixed Effect Parametric Survival Approach. Nigerian Journal of Basic and Applied Sciences, 28 (2), 29-35. doi:10.4314/njbas.v28i2.4





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