From: Low birth weight in São Luís, northeastern Brazil: trends and associated factors
Variables | São Luís 1997/98 | São Luís 2010 | p* | ||
---|---|---|---|---|---|
n= 2.426 | n=5.040 | ||||
n | % | n | % | ||
Maternal age (years) | <0.001 | ||||
< 18 | 317 | 13.1 | 437 | 8.7 | |
18 – 19 | 396 | 16.3 | 504 | 10.0 | |
20 – 34 | 1612 | 66.4 | 3713 | 73.7 | |
≥ 35 | 101 | 4.2 | 486 | 7.6 | |
Maternal schooling (years) | <0.001 | ||||
0 - 4 | 416 | 17.1 | 227 | 4.5 | |
5 - 8 | 1031 | 42.5 | 1122 | 22.3 | |
9 - 11 | 860 | 35.5 | 2920 | 57.9 | |
≥12 | 119 | 4.9 | 758 | 11.0 | |
Missing | - | - | 13 | 0.3 | |
Marital status | <0.001 | ||||
Married | 702 | 28.9 | 1101 | 21.8 | |
Consensual union | 1137 | 46.9 | 2981 | 59.2 | |
Without a companion | 587 | 24.2 | 958 | 19.0 | |
Family income (minimum wages) | <0.001 | ||||
≤1 | 398 | 16.4 | 736 | 14.6 | |
1- 3 | 837 | 34.5 | 2040 | 40.5 | |
>3 | 1032 | 42.5 | 1362 | 27.0 | |
Missing | 159 | 6.6 | 902 | 17.9 | |
Maternal smoking during pregnancy | 0.212 | ||||
No | 2322 | 95.7 | 4854 | 96.3 | |
Yes | 104 | 4.3 | 186 | 3.7 | |
Occupation of the family head | 0.001 | ||||
Non-manual | 500 | 20.6 | 1036 | 20.5 | |
Skilled manual worker | 1094 | 45.1 | 2050 | 40.7 | |
Unskilled manual worker | 767 | 31.6 | 1789 | 35.5 | |
Missing | 65 | 2.7 | 165 | 3.3 | |
Parity | 0.627 | ||||
1 | 1181 | 48.7 | 2404 | 47.7 | |
2 | 720 | 29.7 | 1549 | 30.7 | |
≥3 | 525 | 21.6 | 1087 | 21.6 | |
Adequacy of prenatal care use | <0.001 | ||||
Adequate | 1245 | 51.3 | 2988 | 59.3 | |
Inadequate | 947 | 39.1 | 1700 | 33.7 | |
No care | 199 | 8.2 | 95 | 1.9 | |
Missing | 35 | 1.4 | 257 | 5.1 | |
Category of delivery care | <0.001 | ||||
Private | 268 | 11.0 | 801 | 15.9 | |
Public | 2158 | 89.0 | 4239 | 84.1 | |
Type of delivery | <0.001 | ||||
Vaginal | 1608 | 66.3 | 2675 | 53.1 | |
Cesarean | 818 | 34.7 | 2365 | 47.9 |