Table 5 Standardised incidence ratios for subtypes of chronic obstructive pulmonary diseases in spouses
SubtypeDiseases in wivesDiseases in husbandsDiseases in spouses
OSIR (95% CI)OSIR (95% CI)OSIR (95% CI)
Obstructive chronic bronchitis8371.54 (1.44 to 1.65)8271.59 (1.48 to 1.70)16641.57 (1.49 to 1.64)
Emphysema921.86 (1.50 to 2.28)1021.36 (1.11 to 1.65)1941.55 (1.34 to 1.79)

  • O, observed number of cases; SIR, standardised incidence ratio; CI, confidence interval.

  • 95% CI does not include 1.00.