Table 3.

Hosmer–Lemeshow goodness of fit test for ACS NSQIP for postoperative complications

Deciles of risk (%)	Number of patients	Number of observed complications	Number of expected complications	Mean risk	O:E (95% CI)	X2HL statistic
0–10	34	1	2.12	0.06	0.47 (0.01–2.63)	0.63
10–20	35	2	3.00	0.09	0.67 (0.07–2.41)	0.37
20–30	33	2	3.62	0.11	0.55 (0.06–1.99)	0.82
30–40	34	8	4.98	0.15	1.61 (0.69–3.17)	2.15
40–50	36	3	6.29	0.17	0.48 (0.10–1.39)	2.09
50–60	32	10	6.71	0.21	1.49 (0.71–2.74)	2.04
60–70	34	15	8.72	0.26	1.72 (0.96–2.84)	6.08
70–80	35	10	11.13	0.32	0.90 (0.43–1.65)	0.17
80–90	33	9	14.69	0.45	0.61 (0.28–1.16)	3.98
90–100	34	25	23.73	0.70	1.05 (0.68–1.56)	0.22
0–100	340	85	85		1.00 (0.80–1.22)	18.54

X²HL statistic = 18.540; df = 8; P = 0.018