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Table 1 Distribution of sociodemographic and obstetric characteristics of pregnancy

From: Environmental and individual factors associated with gestational weight gain

Sociodemographic and obstetric characteristics
  n (%) CI 95% Median (IQ)
Age (years) 29 (24–33)
Educational level
  Elementary School 105 (20.75) 17.42 – 24.51  
  High school 276 (54.55) 50.16 – 58.85  
  Higher education 125 (24.70) 21.13 – 28.66  
Ethnicity/Racea
  White 156 (30.83) 26.94 – 35.00  
  Black 36(7.11) 5.16 – 9.71  
  Brown 304(60.08) 55.73 – 64.27  
  Yellow 8(1.58) 0.79 – 3.13  
  Indigenous 2(0.40) 0.09 – 1.57  
Civil status
  Stable union 387 (76.48) 72.57 – 79.98  
  Without companion 119 (23.52) 20.01 – 27.42  
Smoking in the first 5 months of pregnancy
  No 473 (93.48) 90.95 – 95.33  
  Yes 33 (6.52) 04.66 – 09.04  
Alcohol consumption during pregnancy
  No 447 (88.69) 85.60 – 91.18  
  Yes 57 (11.31) 08.81 – 14.39  
Gestational diabetes
  No 472 (93.47) 90.94 – 95.32  
  Yes 33 (6.53) 04.68—09.06  
Non-gestational diabetes
  No 228 (96.61) 93.33 – 98.30  
  Yes 8 (3.39) 01.69 – 06.66  
Pre-eclampsia
  No 431 (85.18) 81.79 – 88.02  
  Yes 73 (14.43) 11.61 – 17.78  
Parity
  Primiparous 272 (53.75) 49.38 – 58.07  
  Multiparous 234 (46.25) 41.92 – 50.62  
Gestational age (weeks) 39 (38–40)
Number of PN consultations
   ≥ 6 414 (92.20) 89.32 – 94.35  
   < 6 35 (7.80) 05.64 – 10.67  
Professional who attended predominantly PN consultations
  Nurse 48 (9.49) 07.21 – 12.37  
  Physician 458 (90.51) 87.62 – 92.78  
Place where PN consultations were predominantly carried out
  Public 269 (55.69) 51.21 – 60.08  
  Private 214 (44.31) 39.91 – 48.78  
  1. CI95% 95% confidence interval, IQ interquartile range, PN prenatal care; a This classification was made with reference to: Ethnicity/race was categorized using the definition used by the ethnic and racial characteristics of the population: a study of the categories of color or racial classification: 2008 from Instituto Brasileiro de Geografia e Estatística (IBGE) [21]