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Rev Bras Ginecol Obstet. 2011;33(11):354-360
DOI 10.1590/S0100-72032011001100006
PURPOSE: To analyze the association of pregnancy in adolescence and prematurity. METHODS: The study included all the patients who delivered at a teaching hospital in Maranhão State, from July to December 2006. The patients were divided into two groups: adolescents (10 to 19 years old) and adults (20 to 34 years old). The variables studied were: educational level, marital status, number of prenatal visits, gestational age at the onset of prenatal care, duration of gestation, delivery route and birth weight. Statistical analysis was performed using the Epi-Info software, version 3.4.1, and the associations between variables were analyzed by the odds ratio (OR), with a 95% confidence interval (CI). Models of logistic regression were also used. The level of significance adopted was 0.05. RESULTS: The study evaluated 1,978 patients. The frequency of deliveries in adolescents was 25.4%. This group presented low educational level, no mates, low number of prenatal visits, late onset of prenatal care, low birth weight and prematurity. In the analysis of prematurity as the outcome variable, there was a clear association with low number of prenatal visits (OR 3.0; 95%CI 2.2-4.0) and late onset of prenatal care (OR 1.9; 95%CI 1.3-2.6) and low educational level (OR 1.9; 95%CI 1.4-2.5) related to adolescence (OR 1.5; 95%CI 1.1-1.9). The incidence of caesarean delivery was significantly lower among adolescents (33.3%) than among adults (49.4%), with a lower association with pre-eclampsia and cephalo-pelvic disproportion. CONCLUSIONS: Pregnancy in adolescence was associated with late onset of prenatal care and low number of visits, as well as low educational level, low birth weight, prematurity and a lower incidence of cephalo-pelvic disproportion and pre-eclampsia.
Summary
Rev Bras Ginecol Obstet. 2011;33(11):354-360
DOI 10.1590/S0100-72032011001100006
PURPOSE: To analyze the association of pregnancy in adolescence and prematurity. METHODS: The study included all the patients who delivered at a teaching hospital in Maranhão State, from July to December 2006. The patients were divided into two groups: adolescents (10 to 19 years old) and adults (20 to 34 years old). The variables studied were: educational level, marital status, number of prenatal visits, gestational age at the onset of prenatal care, duration of gestation, delivery route and birth weight. Statistical analysis was performed using the Epi-Info software, version 3.4.1, and the associations between variables were analyzed by the odds ratio (OR), with a 95% confidence interval (CI). Models of logistic regression were also used. The level of significance adopted was 0.05. RESULTS: The study evaluated 1,978 patients. The frequency of deliveries in adolescents was 25.4%. This group presented low educational level, no mates, low number of prenatal visits, late onset of prenatal care, low birth weight and prematurity. In the analysis of prematurity as the outcome variable, there was a clear association with low number of prenatal visits (OR 3.0; 95%CI 2.2-4.0) and late onset of prenatal care (OR 1.9; 95%CI 1.3-2.6) and low educational level (OR 1.9; 95%CI 1.4-2.5) related to adolescence (OR 1.5; 95%CI 1.1-1.9). The incidence of caesarean delivery was significantly lower among adolescents (33.3%) than among adults (49.4%), with a lower association with pre-eclampsia and cephalo-pelvic disproportion. CONCLUSIONS: Pregnancy in adolescence was associated with late onset of prenatal care and low number of visits, as well as low educational level, low birth weight, prematurity and a lower incidence of cephalo-pelvic disproportion and pre-eclampsia.
Summary
Rev Bras Ginecol Obstet. 2018;40(12):749-756
To describe caffeine consumption during pregnancy and its association with low birth weight (LBW) and preterm birth in the birth cohort of Ribeirão Preto, state of São Paulo, Brazil, in 2010.
Cohort study, with descriptive and analytical approach. Data included 7,607 women and their newborns in Ribeirão Preto, state of São Paulo, Brazil. The women answered standardized questionnaires about reproductive health, prenatal care, life habits, sociodemographic conditions, and information about coffee intake. The independent variable was high caffeine consumption (≥300 mg/day) from coffee during pregnancy, and the dependent variables were LBW (birth weight < 2,500 g) and preterm birth (< 37 weeks of gestational age). Four adjusted polytomous logistic regression models, relative risk (RR) and 95% confidence interval (CI) were fitted: biological and sociodemographic conditions; obstetric history; current gestational conditions; and all variables included in the previous models.
A total of 4,908 (64.5%) mothers consumed caffeine, 143 (2.9%) of whom reported high consumption. High caffeine intake was significantly associated with reduced education and with the occupation of the head of the family, nonwhite skin color, not having a partner, higher parity, previous abortion and preterm birth, urinary tract infection, threatened abortion, alcohol consumption and smoking. No association was found between high caffeine consumption and LBW or preterm birth in both
In this cohort, high caffeine intake was lower than in other studies and no association with LBW or preterm birth was found.
Summary
Rev Bras Ginecol Obstet. 2018;40(12):749-756
To describe caffeine consumption during pregnancy and its association with low birth weight (LBW) and preterm birth in the birth cohort of Ribeirão Preto, state of São Paulo, Brazil, in 2010.
Cohort study, with descriptive and analytical approach. Data included 7,607 women and their newborns in Ribeirão Preto, state of São Paulo, Brazil. The women answered standardized questionnaires about reproductive health, prenatal care, life habits, sociodemographic conditions, and information about coffee intake. The independent variable was high caffeine consumption (≥300 mg/day) from coffee during pregnancy, and the dependent variables were LBW (birth weight < 2,500 g) and preterm birth (< 37 weeks of gestational age). Four adjusted polytomous logistic regression models, relative risk (RR) and 95% confidence interval (CI) were fitted: biological and sociodemographic conditions; obstetric history; current gestational conditions; and all variables included in the previous models.
A total of 4,908 (64.5%) mothers consumed caffeine, 143 (2.9%) of whom reported high consumption. High caffeine intake was significantly associated with reduced education and with the occupation of the head of the family, nonwhite skin color, not having a partner, higher parity, previous abortion and preterm birth, urinary tract infection, threatened abortion, alcohol consumption and smoking. No association was found between high caffeine consumption and LBW or preterm birth in both
In this cohort, high caffeine intake was lower than in other studies and no association with LBW or preterm birth was found.