Journal of Respiratory Medicine

Research Article

Use of Antiasthmatic Drugs during Pregnancy after the First Trimester and Maternal and Neonatal Outcomes

Table 2

Some maternal characteristics of women who filled prescriptions for antiasthmatic drugs during the 2nd-3rd trimester of pregnancy compared with other women. Each variable is adjusted for all other variables and year of delivery. Odds ratio (OR) with 95% confidence interval (95% CI). Bold text marks statistical significance.


Variable	Number with antiasthmatics	Total number	OR	95% CI

Maternal age
<20	141	5393	0.83	0.70–1.00
20–24	1081	43967	0.80	0.75–0.86
25–29	2744	94135	1.00	Reference
30–34	3635	110921	1.17	1.11–1.23
35–39	2350	60617	1.40	1.32–1.49
40–44	570	12252	1.66	1.50–1.83
≥45	32	647	1.80	1.25–2.60
Parity
1	4556	147467	1.00	Reference
2	3866	120556	0.94	0.90–0.98
3	1458	42177	0.90	0.83–0.96
≥4	673	17732	0.83	0.75–0.91
Smoking
Unknown	316	9788	—	—
No	9298	297354	1.00	Reference
<10 cigs/day	636	16119	1.32	1.21–1.43
≥10 cigs/day	303	4671	2.10	1.87–2.37
BMI
Unknown	675	21302	—	—
<18.5	165	7489	0.93	0.75–1.14
18.5–24.9	4832	183964	1.00	Reference
25–29.9	2867	77158	1.11	1.05–1.17
30–34.9	1286	26758	1.17	1.08–1.26
≥35	728	11261	1.44	1.29–1.61
Total number	10553	327932