Table 3. Postoperative 48-hour mortality in NORA and ORA cases according to age group.

Cases	Age, yr	Anesthetic	Deaths
			No.	Rate per 10,000 anesthetics	95% CI
NORA	< 2	2,125 (13.0)	7	32.9	13.2–67.9
	2–11	5,555 (33.9)	0	0.0	0.0–7.0
	12–18	387 (2.4)	0	0.0	0.0–95.0
	19–65	5,182 (31.6)	0	0.0	0.0–7.0
	66–75	2,191 (13.4)	1	4.6	0.1–25.4
	> 75	943 (5.8)	0	0.0	0.0–39.0
ORA	< 2	4,308 (2.3)	8	18.6	8.0–36.6
	2–11	11,671 (6.4)	2	1.7	0.2–6.2
	12–18	5,476 (3.0)	0	0.0	0.0–7.0
	19–65	121,990 (66.5)	36	3.0	2.1–4.1
	66–75	28,959 (15.8)	19	6.6	4.0–10.2
	> 75	10,977 (6.0)	13	11.8	6.3–20.3

Values are expressed as number of cases (proportion).

In the NORA group, P < 0.05 for patients aged < 2 years vs. each of the remaining age groups. In the ORA group, P < 0.05 for [< 2 years vs. 2–11 years], [< 2 years vs. 12–18 years], [< 2 years vs. 19–65 years], [< 2 years vs. 66–75 years], [2–11 years vs. > 75 years], [12–18 years vs. > 75 years], [19–65 years vs. > 75 years].

NORA = non-operating room anesthesia, ORA = operating room anesthesia, CI = confidence interval.