Table 4.

Incidence rate ratio (IRR) and 95% CI for serious systemic adverse events within 30 and 90 days of first primary DD surgery compared to the baseline period.

Complication	Incidence rate ratio (IRR) (95% CI) for 30-day period	Incidence rate ratio (IRR) (95% CI) for 90-day period
Lower respiratory tract infection	1.18 (0.83–1.69)	1.26 (1.03–1.56)
Urinary tract infection	1.10 (0.75–1.63)	1.24 (0.97–1.59)
Stroke (excluding mini-stroke)	0.86 (0.50–1.47)	1.21 (0.88–1.67)
Acute kidney injury	2.00 (1.14–3.53)	1.54 (1.11–2.14)a
Myocardial infarction	2.90 (1.41–5.95)	2.50 (1.66–3.77)
Pulmonary embolism	1.11 (0.45–2.73)	1.51 (0.89–2.56)b

Values in bold type represent statistically significant increased risks.

^aAge groups < 70 were merged as group 1 and the last categories were grouped as 85 + , reference category = 70–74 age group.

^bAge groups < 65 were merged as group 1 and the last categories were grouped as 90 + , reference category = 65–69 age group.