| |
Total
|
No NVP
|
Mild NVP
|
Moderate NVP
|
Severe NVP
|
P value
|
|---|
|
n = 96,056
|
n = 16,596
|
n = 41,198
|
n = 27,744
|
n = 10,518
|
|---|
|
n
|
n (%)
|
n (%)
|
n (%)
|
n (%)
|
|---|
|
Maternal Age (years)
|
|
< 20
|
814
|
190 (1.2)
|
256 (0.6)
|
256 (0.9)
|
112 (1.1)
|
< 0.001
|
|
20–24
|
8630
|
1678 (10.1)
|
3026 (7.4)
|
2787 (10.1)
|
1139 (10.8)
| |
|
25–29
|
26,528
|
4487 (27.0)
|
10,775 (26.2)
|
8111 (29.2)
|
3155 (30.0)
| |
|
30–34
|
34,075
|
5432 (32.7)
|
14,997 (36.4)
|
9967 (35.9)
|
3679 (35.0)
| |
|
35–39
|
21,622
|
3861 (23.3)
|
10,038 (24.4)
|
5636 (20.3)
|
2087 (19.8)
| |
|
≥ 40
|
4383
|
945 (5.7)
|
2106 (5.1)
|
986 (3.6)
|
346 (3.3)
| |
|
Missinga
|
4
| | | | | |
|
Parity
|
|
Nullipara
|
37,800
|
8244 (51.4)
|
15,404 (38.2)
|
10,040 (36.9)
|
4112 (40.1)
|
< 0.001
|
|
Multipara
|
56,005
|
7804 (48.6)
|
24,875 (61.8)
|
17,170 (63.1)
|
6156 (60.0)
| |
|
Missinga
|
2251
| | | | | |
|
Education (years)
|
|
≤ 12
|
34,790
|
6398 (38.7)
|
14,118 (34.4)
|
10,320 (37.3)
|
3954 (37.8)
|
< 0.001
|
|
> 12
|
60,893
|
10,126 (61.3)
|
26,931 (65.6)
|
17,315 (62.7)
|
6521 (62.3)
| |
|
Missinga
|
373
| | | | | |
|
BMI (kg/m2)
|
|
< 18.5
|
15,500
|
2859 (17.2)
|
6834 (16.6)
|
4167 (15.0)
|
1640 (15.6)
|
< 0.001
|
|
18.5–24.9
|
70,221
|
12,141 (73.2)
|
30,216 (73.4)
|
20,351 (73.4)
|
7513 (71.5)
| |
|
≥ 25
|
10,272
|
1584 (9.6)
|
4122 (10.0)
|
3209 (11.6)
|
1357 (12.9)
| |
|
Missinga
|
63
| | | | | |
|
Smoking during pregnancy
|
|
No
|
90,887
|
15,325 (93.3)
|
39,155 (95.8)
|
26,294 (95.5)
|
10,113 (97.0)
|
< 0.001
|
|
Yes
|
4386
|
1106 (6.7)
|
1724 (4.2)
|
1239 (4.5)
|
317 (3.0)
| |
|
Missinga
|
783
| | | | | |
|
Pregnancy Complications
|
|
Threatened abortion
|
11,428
|
1695 (10.2)
|
4885 (11.9)
|
3451 (12.4)
|
1397 (13.3)
|
< 0.001
|
|
Threatened premature labor
|
18,715
|
2896 (17.5)
|
7990 (19.4)
|
5566 (20.1)
|
2263 (21.5)
|
< 0.001
|
|
Premature rupture of membrane
|
7932
|
1549 (9.3)
|
3374 (8.2)
|
2218 (8.0)
|
791 (7.5)
|
< 0.001
|
|
Pregnancy-induced hypertension
|
2964
|
622 (3.8)
|
1189 (2.9)
|
841 (3.0)
|
312 (3.0)
|
< 0.001
|
- Chi-squared test
- a Not included in percentage distribution
