. 2016 Jun 3;27(2):202–209. doi: 10.1007/s10926-016-9646-1

Table 2.

External validation of the prediction rule in 211 employees

Sickness absent at	N (%)	Calibration		Discrimination
Sickness absent at	N (%)	Intercept (SE^a)	Slope (SE^a)	AUC (95 % CI)^b
3 months	122 (79)	1.94 (0.55)	0.31 (0.31)	0.54 (0.41; 0.65)
6 months	73 (47)	0.42 (0.18)	0.06 (0.23)	0.50 (0.40; 0.61)
12 months	18 (12)	n.a.	n.a.	n.a.

n.a. Not analyzed because of small sample size

^aStandard error

^bArea under the receiver operating characteristic curve (95 % confidence interval)