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| Articles
by
M. Rafiei |
Total Records (
3 ) for
M. Rafiei |
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M. Rafiei
and
S. M. T. Ayatollahi
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To estimate the prevalence of low birth weight (LBW) and to document distribution of body mass index (BMI) at birth in Arak (central Iran) neonates of the 10,241 live neonates (5241 boys, 5000 girls, sex ratio 105) born in 2004 in Arak. A birth weight of less than 2500 g was classified as LBW. BMI based on the original supine length and weight data was calculated and compared with BMI at birth of Iran reference data. The overall prevalence of LBW was calculated as nine per cent, less pronounced among boys than girls. Over two-thirds of Arak neonates enjoyed normal weight and some five per cent of them were overweight or obese. However, one-quarter of neonates were classified underweight. Girls` BMI centiles lie below those of boys. Arak neonates were relatively free of obesity. However, the rate of neonatal underweight was striking. Neonatal LBW was more prevalent than the developed world. While LBW is a crude index, underweight BMI class is an adjusted index, which should be taken into consideration when one studies neonatal weight. |
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A. Ghazavi
,
G. Mosayebi
,
E. Mashhadi
,
M.A. Shariat-Zadeh
and
M. Rafiei
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This study was planned to determine the levels of uric
acid (UA) and CRP at preeclampsia and their association with the severity
of the disease. In a cross-sectional, case-control study we measured UA
and CRP levels in blood samples from 46 women with preeclampsia, 23 normal
pregnant women and 23 non pregnant women matched for age, BMI, parity
and gestational age were measured. Twenty three patients had developed
severe and 23 mild preeclampsia. UA and CRP were measured by enzymatic
method and enzyme-linked immunosorbent assay, respectively. Roc curve
was used to determine the optimal cutoff value. Results showed CRP and
UA concentrations were higher in Preeclamptic group (33.77 ±25.97,
5.93 ±0.75) compared with normal pregnant group (17.31 ±19.54,
5.47 ±0.41). CRP levels were also significantly elevated in women
with severe preeclampsia compared to those mild preeclampsia (42.26 ±24.04,
16.81 ±22.03). Determination of serum CRP levels may be used as
marker for the severity of preeclampsia. We also suggest that serum UA
level of 5.5 mg dL-1 is best cutoff point for the diagnosis
of preeclampsia. |
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M. Rafiei
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S.M.T. Ayatollahi
and
J. Behboodian
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The objective of the present article is to suitably model the hospitalization time of the mother and compare the different models. An observational and cross-sectional study was done with a randomized sample of 1600 mothers admitted for delivery at Arak maternity clinics. The hospitalization time was regarded as dependent variable; mother’s age and its square, mother’s job, having abnormal child, ordinal pregnancy or delivery and its square, number of abortions and its square, number of present children and its square, mother’s residency, type of delivery, twice and triplets, all were considered as independent variables. Advanced recent methods of countable data modeling were used. An innovative method was introduced for the data analysis. The modeling of mother’s hospitalization time was shown to be the negative binomial model. It was a suitable model due to unequal variance and means of dependent variables for mother’s hospitalization time. Having abnormal child, type of delivery (NVD, C and S) and twice delivery were significant variables in this model. More specific models (Zero-truncated Poisson and negative binomial) were shown to be more suitable for the age and its square, having an abnormal child, type of delivery, delivery of twice or triplet which was significant variables in determining mother’s hospitalization time. A suitable statistical model for determination and modeling of mothers’ hospitalization time was achieved with a simple change of these times. This model included more variables with higher specificity. |
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