Table 3.
Mode of Conception and Specified Fertility Treatment in Women with Asthma in Regards to Allergy with Live Births
| Characteristics | Cases (Asthma + Perennial Allergy) | Controls (Asthma + Season and No Allergy) | Asthma + Season Allergy | Asthma + No Allergy | OR (95% CI) (Cases vs Controls) | p-value |
|---|---|---|---|---|---|---|
| Subjects (n) | 544 | 388 | 210 | 178 | ||
| Mode of Conception | ||||||
| Fertility treatment | 75 (13.8%) | 39 (10.1%) | 16 (8.9%) | 23 (11.1%) | OR 1.43 (0.95–2.16) | =0.087 |
| Adjusteda | OR 1.17 (0.74–1.87) | =0.502 | ||||
| Specified Fertility Treatment | ||||||
| Intrauterine insemination | 29 (5.3%) | 17 (4.4%) | 11 (6.1%) | 6 (2.9%) | OR 1.23 (0.67–2.27) | =0.510 |
| Assisted reproductive technologyb | 46 (8.5%) | 22 (5.7%) | 5 (2.8%) | 17 (8.2%) | OR 1.54 (0.91–2.60) | =0.109 |
| Spontaneous conception | 469 (86%) | 349 (90%) | 164 (91.1%) | 185 (88.9%) | OR 0.70 (0.46–1.05) | =0.087 |
Notes: aAdjusted for body mass index (BMI), smoking status, maternal age, primiparity, being in a same-sex relationship, being single and allergy treatment (eye drops, antihistamine and nasal steroids). bAssisted reproductive technology: in vitro fertilization, intracytoplasmic sperm injection, frozen embryo transfer, aspiration of sperm, unspecified.