Skip to main content

Table 2 Description of the lifestyle characteristics and their association with low birth weight

From: Association between maternal lifestyle factors and low birth weight in preterm and term births: a case-control study

Variable

Reference

Total

(n = 1964)

Normal birth weight

(n = 1381)

Preterm low birth weight

(n = 294)

Term low birth weight

(n = 289)

N (%)

N (%)

N (%)

N (%)

Passive smoking

No

1289 (65.6)

924 (66.9)

187 (63.6)

178 (61.6)

Yes

675 (34.4)

457 (33.1)

107 (36.4)

111 (38.4) **

Drinking

No

1925 (98.0)

1359 (98.4)

286 (97.3)

280 (96.9)

Yes

39 (2.0)

22 (1.6)

8 (2.7)

9 (3.1) *

Coffee or tea consumption (/week)

No

1667 (84.9)

1156 (83.7)

260 (88.4)

251 (86.9)

1–3

257 (13.1)

194 (14.0)

30 (10.2)

33 (11.4)

≥4

40 (2.0)

31 (2.2)

4 (1.4)

5 (1.7)

Physical activity (/week)

No

419 (21.3)

271 (19.6)

82 (27.9)

66 (22.8)

1–3

672 (34.2)

476 (34.5)

95 (32.3) **

101 (34.9)

≥4

873 (44.5)

634 (45.9)

117 (39.8) **

122 (42.2)

Gestational gain

Normal

770 (39.2)

570 (41.3)

86 (29.3)

114 (39.4)

Less

721 (36.7)

428 (31.0)

151 (51.4) **

142 (49.1) **

More

473 (24.1)

383 (27.7)

57 (19.4)

33 (11.4) **

  1. Note: In the analysis, the preterm and term LBW groups were compared with the normal weight group;
  2. *p < 0.1; **p < 0.05