Showing 4 results for Cesarean
M.a Pohrhoseingholi, H Alavi Majd, A.r Abadi, S Parvanehvar,
Volume 1, Issue 1 (12-2005)
Abstract
Background and Objectives: Missing data exist in many studies, e.g. in regression models, and they decrease the model's efficacy. Many methods have been suggested for handling incomplete data: they have generally focused on missing outcome values. But covariate values can also be missing.
Materials and Methods: In this paper we study the missing imputation by the EM algorithm and auxiliary variable and compare the result with case-complete analysis in a logistic regression model dealing with factors that influence the choice of the delivery method.
Our data came from a cross-sectional study of factors associated with the choice of the delivery method in pregnant women. The sample size in this cross-sectional study was 365 and the data were collected through interviews, using questionnaires covering several demographic variables, delivery history, attitude, and some social factors. We used standard deviations to compare the efficiency of the two methods.
Results: The results show that maximum likelihood analysis by EM algorithm is more effective than case-complete analysis.
The problem of missing data is common in surveys and it causes bias and decreased model efficacy. Here we show that the EM algorithm for imputation in logistic regression with missing values for a discrete covariate is more effective than case-complete analysis.
Conclusion: On the other hand if missing values occur for a continuous covariate then we have to use other methods or change the variable into a discrete one.
A Bahonar, Aa Shaebani, M Aghajani,
Volume 6, Issue 1 (6-2010)
Abstract
Background & objectives: Increasing the rate of cesarean in recent decades is a noticeable sign which has been interested to look at some possible medical, psychological and social determinants. The aim of this study was to determine trend of cesarean during 1998-2007 and evaluation of some social factors in Damghan, Iran.
Methods: We used a case-control study by direct interview with mothers in health centers of city. A total of 120 cases (delivered by cesarean method) and 90 controls (delivered by natural method) were selected. For estimating of trend we used all medical files in Damghan maternity hospital between 1998-2007.Statistical analysis was performed in SPSS (Ver16) by descriptive and analytical (Chi-square, ANOVA and logistic regression) methods.
Results: A total of 12200 deliveries were registered during 1998-2007 and 51.7 percent of them were cesarean. From 1999 to 2003 years there is an increasing trend and most frequency of cesarean was in 2006 year (53.5%). Mean age, education, occupation, number of delivery, husband occupation, number of children and residency area was not significant between two groups. But from social factors, mother's education from diploma and higher, recom
Mr Maracy, Z Farajzadeghan, A Peirdehghan, H Kazemaini,
Volume 7, Issue 3 (12-2011)
Abstract
Background & Objectives: The Disability-Adjusted Life Year (DALY) was developed by the World Health Organization (WHO) to measure, compare, and analyze the burden of various diseases. The aim of this study was to estimate and compare the burden of cesarean section (CS) and normal delivery (ND) in Isfahan during 2008 year by employing DALY.
Methods: Burden of CS and ND was estimated based on information provided by hospitals located in Isfahan. The incidence of complications of both vaginal delivery and cesarean section at the time of delivery and 2, 4, 6 weeks after calculated by using hospitals files. Dismod II and STAT.10 software were used to calculate YLD, YLL and DALY of delivery and their complications.
Results: DALYs for cesarean and vaginal deliveries were estimated to be 20.70 years per 1000 deliveries and 8.89 years per 1000 with their complications, respectively. DALY from cesarean section was 23.404 years per 1000 deliveries in private hospitals and 15.67 years per 1000 deliveries for governmental hospitals. DALY from vaginal delivery was 8.98 in private hospitals and 8.137 years in governmental hospitals per 1000 deliveries.
Conclusion: This study showed a considerable burden for cesarean section particularly in private hospitals. This important finding should be considered by health policy makers in Iran.
L Khazaei, S Khodakarim, A Mohammadbeigi , A Alipour,
Volume 15, Issue 2 (9-2019)
Abstract
Background and Objectives: an important problem challenging cesarean section is its extensive use as a common method of delivery. Due to the growing trend of cesarean section in Iran in recent years, the natural delivery promotion program was implemented as one the programs incorporated in the Health System Reform Plan in 2014. In this study, the trend of changes in the percentage of CS delivery in Qom Province following the implementation of this program was evaluated.
Methods: This trend analysis that was performed in all cesarean deliveries in Qom Province from 2005 to 2018 using a joinpoint regression method.
Results: These results showed an annual increase of0.4% in the CS percentage 95% CI: -0.5 to 1.2), which was not statistically significant. A significant decrease was observed in the rate of CS in governmental hospitals. Conversely, in non-governmental hospitals, the percentage of CS increased significantly.
Conclusion: According to the findings of this study, after more than 3 years of implementation of health sector evolution plan, overall implementation of this plan failed to significantly reduce the overall process of cesarean delivery during this period in Qom province and achieve the predetermined goals.
