Keramt Noori Jaliani; Hojat Zerati; Kazem Mohammad; Mohaammadhasan Rakhshani; Hasan Hashemi; Akbar Fotohi
Volume 20, Issue 1 , March and April 2013, , Pages 15-24
Abstract
Background: To determine the familial aggregation, Co-aggregation and within person association of myopia and four phenotypes of astigmatism by a conditional model in Tehran Eye Study.
Materials and Methods: Myopia, Total, ATR, WTR and oblique astigmatism were studied through a population based, cross ...
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Background: To determine the familial aggregation, Co-aggregation and within person association of myopia and four phenotypes of astigmatism by a conditional model in Tehran Eye Study.
Materials and Methods: Myopia, Total, ATR, WTR and oblique astigmatism were studied through a population based, cross sectional study in 1326 siblings older than 5 years from 531 families with 2-4 siblings using stratified cluster random sampling from August to December 2002 in Tehran Eye Study. Results: Based on the conditional model and via Proc GENMOD SAS 9.1, the conditional odds ratios (95% confidence interval) ,that indicates conditional familial aggregation, for the total, WTR, ATR and oblique astigmatism and myopia were 1.16(1.01-1.33), 1.59(1.17-2.16), 1.77(1.39-2.26), 2.12(1.41-3.19) and 1.96(1.72-2.24), respectively .On the other hand, conditional odds ratios that indicates within person association of two disease, for myopia and WTR, myopia and ATR, myopia and Oblique and at last myopia and total astigmatism were 5.74(3.99-8.17), 3.41(2.01-5.82), 4.6(2.15-9.86) and 6.10(4.76-7.82), respectively. Although no significant familial co-aggregation has been identified. Conclusion: Based on conditional model and after controlling for the confounders, this analysis yielded, a significant aggregation of four phenotypes of astigmatism and myopia, a large within person association and moderate but non-significant co-aggregation of these disorders.
M MAHMOUDI; H ZERAATI; A AKABERI; F MAJLESI
Volume 15, Issue 1 , March and April 2008, , Pages 40-45
Abstract
Background and Purpose: Epidemiologists have always been sought to discover factors influencing populations so that they can control population growth. This study was conducted to investigate the relationship of socioeconomic and demographic factors with fertility.
Methods and Materials: This deh1ive ...
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Background and Purpose: Epidemiologists have always been sought to discover factors influencing populations so that they can control population growth. This study was conducted to investigate the relationship of socioeconomic and demographic factors with fertility.
Methods and Materials: This deh1ive analytical study was conducted in two stages in 2003 on 1300 families in the Northwestern province of Azarbaijan-Gharbi in Iran. The study data were collected through questionnaires and interview. The relationship between woman's age marital age marital duration sexual preference number of wanted children stillbirth child death education and employment couples age difference and fertility was determined using Pearson's correlation coefficient stepwise multiple linear regression and ANCOVA in SPSS.
Results: Mean age of the participants was 32.61±7.97 and mean live birth was 2.39±1.82. In the regression model child death number of wanted children sexual preference marital duration with positive coefficients and couples education with negative coefficients emerged. Fertility in marriages under 15 years (4.20±2.43) was significantly higher than other marital age groups. Fertility was higher in illiterate or low-education women. Mean wanted child in women of younger than 20 years old and women of 40-49 years of age were 2.9±0.56 and 3.37±0.84 respectively.
Conclusion: As the results suggest child death sexual preference desire to bear more infants and marriage before the age of 15 are associated with higher fertility rates. Illiterate or Low-education women are more fertile than other educational groups. Mean wanted children in women of under 20 years of age is higher than the current fertility rate (2.39).