2021
DOI: 10.1186/s13690-021-00720-2
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Time to first antenatal care visit among pregnant women in Ethiopia: secondary analysis of EDHS 2016; application of AFT shared frailty models

Abstract: Background The survival of pregnant women is one of great interest of the world and especially to a developing country like Ethiopia which had the highest maternal mortality ratios in the world due to low utilization of maternal health services including antenatal care (ANC). Survival analysis is a statistical method for data analysis where the outcome variable of interest is the time to occurrence of an event. This study demonstrates the applications of the Accelerated Failure Time (AFT) model… Show more

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Cited by 8 publications
(15 citation statements)
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“…However WHO recommendations for minimum ANC visits was limited to only four check-ups before 2016, during which the data was collected used in the study. Lack of timely initiation of ANC or no ANC can increase the risk for mother and child 8 , 9 . Women who are not initiating ANC early may lead to late diagnosis of complications which might have the potential to detrimentally affect maternal and foetus health 10 , 11 .…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…However WHO recommendations for minimum ANC visits was limited to only four check-ups before 2016, during which the data was collected used in the study. Lack of timely initiation of ANC or no ANC can increase the risk for mother and child 8 , 9 . Women who are not initiating ANC early may lead to late diagnosis of complications which might have the potential to detrimentally affect maternal and foetus health 10 , 11 .…”
Section: Introductionmentioning
confidence: 99%
“…Although there are various kinds of literature studying different factors that influence the timing of the first ANC visit among women 8 10 , however, there is a dearth of literature primarily focusing on the exact time for first ANC visit in Indian context. Therefore, studying the median survival time (MST) as well as understanding the contextual factors that influence a mother’s decision to attend, is of utmost importance.…”
Section: Introductionmentioning
confidence: 99%
“…The parametric baseline distributions namely Gamma frailty distribution, log-normal, and Inverse Gaussian distributions were fitted and compared by considering the regions of the women as frailty terms. The effect of random component (frailty) was significant for Weibull gamma shared frailty because of its smallest AIC and BIC values [ 20 ]. The final Weibull gamma shared frailty model is indicated in Table 6 .…”
Section: Resultsmentioning
confidence: 99%
“…f(Ui) In this paper, we supposed that the random effect (shared frailty) had inverse Gaussian and gamma distribution with variance θ and unit mean, as described in the density functions bellow. [10] Gamma distribution…”
Section: Aft Modelmentioning
confidence: 99%
“…are and survival function of ∈ ij espectively, and β refers to the covariate coefficient's vector associated with the covariates vector z ij measured in the j th event of i th subject. [10]…”
Section: Aft Modelmentioning
confidence: 99%