A Mansouri, Y Mokhayeri, E Mohammadi Farrokhran , Z Tavakkol , A Fotouhi ,
Volume 8, Issue 2 (20 2012)
Abstract
Background & Objectives: Sleep quality is an important factor in student life
and affects in their learning process. Sleep problems are related to increased
health concerns, irritability, depression, fatigue, attention and concentration
difficulties, along with poor academic performance. The aim of this paper is to
conduct a survey based on a questionnaire that would characterize the quality
of sleep in students living in dormitories of Tehran University of
Medical Sciences (TUMS).
Methods: We conducted a cross-sectional study using the stratified random
sampling approach on 277 students residing in dormitories in Tehran. A
demographic questionnaire and Pittsburgh Sleep Quality Index (PSQI) were used
for data collection.
Results: Mean (CI) of PSQI in students was 8.57 (8.10- 9.04). Using
the cut-off score of 6 for the PSQI global score, 73.3% (68.1%-78.5%) of
students were described as poor sleeper. Female students had a worse quality of
sleep compared to male. The mean duration of sleep in students was 5:15´± 105´
(hours). This was significantly higher in male students than female students.
There were no significant relationships between demographic variables such as
age, academic level, marital status and family income with and quality of
sleep.
Conclusion: This study showed that poor sleep quality is prevalent
among students living in dormitories of TUMS. Therefore it is necessary to
provide effective educational interventions for this group in order to improve
the quality of sleep.
E Mohammadi Farrokhran, M Mahmoodi, K Mohammad, A Rahimi, F Majlesi, M Parsaeian,
Volume 9, Issue 1 (5-2013)
Abstract
Background & Objectives: Although several studies have been carried out for evaluation of the first birth interval, none of them has considered the presence of infertile women within the sample. Therefore, the aim of this study was to employ survival analysis to study the first birth interval and its determinant factors more accurately.
Methods: In Data from 1068 married women of reproductive age in west Azarbaijan province were considered in this investigation. Two-stage sampling design was used to collect data via a questionnaire, modified Gompertz model, a special kind of cure models, was employed in this study. For descriptive and analytical data analysis, SPSS 16 and R 2.12 were used respectively.
Results: In this study, the average interval between marriage and first birth was 3.9± 0.7 (± SD) years. Using modified Gompertz model, among all demographic factors only mother’s education had significant effect on the first birth interval so that with increasing mother’s educational level, the first birth interval had also increased.
(P =0.007). In addition, the estimation of the proportion of women who did not have any children was 0.062 that showed a positive trend with increasing mother’s educational level.
Conclusion: This study revealed that due to the presence of infertility among married women the use of Modified Cured Gompertz model is an appropriate method for evaluation of the first birth intervals and it's determinant factors.
