Table 5.

The most important factors explaining survival at 1 year and at 14 years after index fracture in the mortality data (n = 486). (Variables in italics do not include in the optimum result)

	RR limit	False negative count	Sensitivity %	Specificity %	κ	Added variable
	0.91	73	32.4	91.8	0.281	ASA class 1–3
	2.07	63	41.7	87.6	0.309	BMI ≥ 20 kg/m2
	1.82	46	57.4	81.7	0.364	Age < 85 years
At 1 post-fracture year	1.54	43	60.2	80.7	0.372	Comorbidity (none; alcohol abuse; Alzheimer’s disease)
	1.56	40	63.0	79.9	0.383	Operative method (NFB20; NFJ50; NFJ54; NFB30-50)
	1.50	39	63.9	79.9	0.390	Sex (female)
		33	69.4	76.2	0.384	Fracture type (S72.0; S72.2)
	RR limit	False negative count	Sensitivity %	Specificity %	κ	Added variable
	0.19	30	92.9	55.6	0.478	Age < 75 years
	0.24	33	92.4	61.9	0.516	BMI ≥ 20 kg/m2
At 14 post-fracture years	0.39	38	91.0	69.8	0.539	ASA class 1–2
	0.40	39	90.8	71.4	0.545	Fracture type (S72.2)
	0.40	43	89.8	73.0	0.535	Operative method (NFJ50; NFJ54; NFB30-50)
	0.41	43	89.8	76.2	0.555	Comorbidity (none; alcohol abuse)
		55	87.0	79.4	0.517	Sex (male)