Table 4.

Association between days at home up to 30 days after surgery (DAH₃₀) and one year mortality (excluding deaths that occur within the first 30 days): both elective and non-elective surgery.

DAH30	No. of individuals	No. of deaths	Person years	Rate per 1000 person years	Unadjusted HR (95% CI)	Adjusteda HR (95% CI)	Adjustedb HR (95% CI)
29–30	199,169	4653	197,073	23.61	Reference	Reference	Reference
26–28	207,241	4939	204,863	24.11	1.02 (0.98–1.06)	1.43 (1.36–1.51)	1.35 (1.28–1.42)
23–25	83,638	4664	81,276	57.38	2.43 (2.33–2.53)	2.33 (2.2–2.46)	2.25 (2.14–2.37)
20–22	38,928	3564	37,044	96.21	4.07 (3.89–4.25)	2.89 (2.73–3.07)	2.76 (2.61–2.92)
17–19	25,002	2873	23,434	122.6	5.18 (4.94–5.42)	3.41 (3.21–3.62)	3.23 (3.04–3.42)
9–16	35,581	5527	32,465	170.24	7.18 (6.91–7.47)	4.35 (4.12–4.59)	4.22 (4.01–4.44)
0–8	35,875	8662	30,403	284.91	12.01 (11.59–12.44)	6.78 (6.44–7.13)	6.73 (6.42–7.07)

Abbreviations: HR, hazard ratio; CI, confidence interval.

^aAdjusted for all variables in Table 1 (for Charlson Comorbidity Index, using the 1 year including cancer data).

^bAdjusted for all variables in Table 1 except operation by organ system (for Charlson Comorbidity Index, using the 1 year including cancer data).