Table IV.
Crude and adjusted risk ratios (RRs) and CIs for medically assisted reproduction, according to asthma status.
| No asthma (n = 200 248) | Asthma (n = 6445) | Crude RR (95% CI) | Adjusted RRb (95% CI) | |
|---|---|---|---|---|
| Medically assisted reproduction (any) | 5009 (2.5%) | 239 (3.7%) | 1.27 (1.12–1.44) | 1.34 (1.18–1.52) |
| Ovulation stimulation | 419 (0.2%) | 9 (0.1%) | 1.14 (0.70–1.87) | 1.10 (0.67–1.79) |
| Intrauterine insemination | 596 (0.3%) | 39 (0.6%) | 1.92 (1.39–2.66) | 1.98 (1.43–2.74) |
| In vitro fertilization | 1826 (0.9%) | 87 (1.3%) | 1.22 (1.03–1.46) | 1.29 (1.04–1.60) |
| Intracytoplasmic sperm injection | 1973 (1.0%) | 95 (1.5%) | 1.23 (1.00–1.51) | 1.32 (1.07–1.62) |
| Other treatment | 152 (0.1%) | 7 (0.1%) | 1.28 (0.64–2.53) | 1.29 (0.67–2.91) |
a
Adjusted for calendar year.
b
Adjusted for obesity, endometriosis, polycystic ovary syndrome, approximated age of reproductive start and calendar year.