| Objective:To describe the present situation and lifestyle of pregnant women in Hebei Province, and analyse the key factors that influence the weight gain during pregnancy and neonatal birth weight, we further explore the relationship between weight gain and the neonatal birth weight.Methods:A total of 586 cases of pregnant women, who in 6-12 weeks register in the specified community health service center or hospital obstetrics clinic and are regular to check and delivery from March 2013 to May 2014 are chosen in our study. And they all signed informed consent.We investigate the pregnant women lifestyle and maternal and child health, and establish health records and to observe the health indicators. Survey indicators include pre-pregnancy height and weight, the weight at 6-12 weeks, the 28 th, the 36 th week of gestation, before and after delivery, and the weight of the postpartum appendages, 24 hour dietary review questionnaire of pregnant women and physical activity survey, the pregnancy outcome and neonatal birth weight and fetus length, head circumference of birth, etc. Epidata database was established with double entry, SPSS13.0 and SAS9.3 software were used for statistical analysis. Measurement data were measured with "mean +/-standard deviation", the count data was with the proportion, t-test was used to describe two sample mean comparison, multiple sets of measurement data was compared with single factor analysis of variance, the count data analysis was by chi-square test, and more classfication orderly logistic regression analysis was used to describe the influence factors of different pregnancy weight gain, and neonatal birth weight related influencing factors was analysed by multiple linear regression analysis. Significant test standards are bilateral α = 0.05.Results:A total of 586 cases of pregnant women with single fetus delivery were enrolled in the survey in Shijiazhuang 9 community health service centers and Hengshui 2 hospitals.A total of 525 delivery single fetus of pregnant women in data statistical analysis, excluding lost to follow-up(n=33),abortion(n=21), induced labor(n=4) and embryo damage(n=3).Cesarean delivery(n=229), spontaneous labor(n=296),multipara(n=76), primipara(n=449).Pre-pregnancy average body mass index is(21.21+/-3.02) kg/m2,the average pregnancy weight gain is(15.80+/-3.55)kg, which is higher than the recommended 12.5kg, and the average neonatal birth weight is(3400.5+/- 427.92) g, mostly concentrated in the normal range.Pregnancy Weight gain is divided into three groups: lack of weight gain during pregnancy group(n=46), accounting for 8.76%; pregnancy weight gain normal group(n=239), accounting for 45.52%; excessive weight gain during pregnancy group(n=240), accounting for 45.71%. Difference in pregnancy weight gain is related with maternal age, pre-pregnancy BMI, whether to exercise during pregnancy, whether to smoke passively in pregnancy middle-late, and neonatal weight(P<0.05). Weight gains during pregnancy in insufficient and excessive group of BMI were more than normal group; have the highest average pregnancy body mass index during the age from31 to 35 years is the highest(22.0+/-2.9)kg/m2;Gestational weight gain is reduced with increasing age; Group of no exercisers has a higher weight gain than that of exercisers during pregnancy; Pregnant women during pregnancy middle-late passive smokers pregnancy weight gain is higher; The more pregnancy weight gain is related with the greater neonatal birth weight. Pregnancy weight gain has no significant correlation with placental weight, production number, etc.(P>0.05).Birth weight was higher in no-exercise group in the early pregnancy, and in group of her husband pre-pregnancy smoking, and smoke passively in the middle-late of pregnancy.Pregnant placenta weight is related with the bigger the neonatal weight; The birth weight is lower in pregnant women whose families are with high blood pressure(P<0.05). Neonatal birth weight has no significant correlation with maternal age, pre-pregnancy BMI, etc.(P>0.05). Multiple factors orderly logistic regression analysis shows that pregnant women age, pre-pregnancy BMI, regular exercise during mid-pregnancy and newborn weight were independent factors that affect pregnancy weight gain, there is significant negative correlation between pregnant women age and pregnancy weight gain. The multivariate linear regression analysis of neonatal birth weight showed that the placenta weight, smoking passively in the late pregnancy, no exercise in the early pregnancy, and with families with high blood pressure are independent risk factors of neonatal weight.It is reasonable that energy and capacity nutrients(protein, fat and carbohydrates) intake at early, middle and late pregnancy. With the increase of gestational age, energy and capacity nutrient intake are on the rise, and energy intake within a reasonable range.Conclusion:The influence factors of weight gain during different pregnancy are pregnant women age, pre-pregnancy BMI, exercise during pregnancy, passive smoking during pregnancy, birth weight. Exercise during pregnancy or smoke passively during pregnancy, her husband’s smoking in pregnancy, and the weight of placenta are factors that affect the neonatal birth weight. It is reasonable that the nutritional intake during pregnancy. |
PDF Full Text Request