Table 1 Description of the weight and body mass index (BMI) variables in the Brazilian Maternal and Child Nutrition Consortium (BMCNC) and in the Brazilian Food and Nutritional Surveillance System (SISVAN)
BMCNC dataset | SISVAN dataset | |||
|---|---|---|---|---|
Weight and BMI variables | Mean (SD) | Minimum; Maximum | Mean (SD) | Minimum; Maximum |
30–94 days | ||||
Self-reported pre-pregnancy weight | 62.4 (13.0) | 30; 120 | 63.8 (13.6) | 33.0; 128.0 |
First trimester weight | 64.0 (13.1) | 34.9; 116.8 | 65.0 (13.8) | 36.6; 121.5 |
Difference between weightsa | 1.6 (3.8) | −21.1; 23.5 | 1.2 (2.8) | −8.7; 15.8 |
Self-reported pre-pregnancy BMIb | 24.4 (4.6) | 12.9; 46.9 | 25.0 (5.0) | 12.6; 56.6 |
First trimester BMIb | 25.1 (4.6) | 14.4; 45.8 | 25.4 (5.0) | 12.6; 56.9 |
Difference between BMIa | 0.6 (1.48) | −7.1 – 8.7 | −0.5 (1.1) | − 0.9; 4.1 |
30–60 days | ||||
Self-reported pre-pregnancy weight | 63.2 (12.9) | 30; 115 | 64.2 (13.5) | 33.0; 126.0 |
First trimester weight | 64.6 (13.1) | 35.8; 113.8 | 65.3 (13.7) | 36.6; 120.0 |
Difference between weightsa | 1.4 (3.5) | −21.1; 19.5 | 1.1 (2.6) | −8.7; 15.8 |
Self-reported pre-pregnancy BMIb | 24.6 (4.6) | 13.9; 45.7 | 25.0 (4.9) | 12.6; 53.0 |
First trimester BMIb | 25.1 (4.7) | 14.4; 45.8 | 25.4 (5.0) | 12.6; 53.3 |
Difference between BMIa | 0.5 (1.3) | −7.1 – 8.0 | −0.4 (1.0) | −7.4; 4.1 |
30–45 days | ||||
Self-reported pre-pregnancy weight | 64.2 (12.5) | 40; 112 | 64.6 (13.7) | 33.0; 124.0 |
First trimester weight | 65.6 (12.5) | 36; 113.8 | 65.6 (13.7) | 36.6; 119.0 |
Difference between weightsa | 1.4 (3.2) | −16.0; 18.0 | 1.0 (2.5) | −8.7; 15.8 |
Self-reported pre-pregnancy BMIb | 24.9 (4.5) | 16.4; 40.4 | 25.1 (4.9) | 12.6; 53.0 |
First trimester BMIb | 25.5 (4.5) | 16.0; 40.2 | 25.5 (5.0) | 12.6; 53.3 |
Difference between BMIa | 0.6 (1.3) | −5.5 – 7.8 | −0.4 (1.0) | −7.4; 4.0 |