Table 4 Predictive validity – identifying sick leaves lasting at least 26 weeks. Predictive validity of the ability to identify sick leaves lasting at least 26 weeks, using 8, 12 or 26 weeks, as cut-offs in length as predicted by the sick-listed, medical consultants or officers. Sensitivity, specificity, PPV and likelihood ratio data for NIO assessors are presented as means for length predicted on Sickness Certificates 1 and Sickness Certificates 2 (SC2).

152

0.69

(0.50–0.84)

0.69

(0.60–0.77)

2.2

(1.3–3.9)

0.37

(0.25–0.51)

0.33

(0.21–0.47)

152

0.50

(0.32–0.68)

0.83

(0.75–0.90)

3.0

(1.5–6.1)

0.44

(0.28–0.62)

0.40

(0.24–0.58)

152

0.28

(0.14–0.47)

0.98

(0.94–1.00)

16.9

(3.5–160)

0.82

(0. 48–0.98)

0.78

(0.44–0.95)

1961

0.44

(0.39–0.49)

0.72

(0.70–0.74)

1.6

(1.3–1.9)

0.25

(0.22–0.29)

1961

0.20

(0.16–0.24)

0.92

(0.90–0.93)

2.4

(1.8–3.2)

0.35

(0.28–0.41)

1961

0.07

(0.04–0.10)

0.99

(0.98–0.99)

2.8

(1.5–5.4)

0.54

(0.38–0.69)

1968

0.55

(0.50–0.60)

0.58

(0.56–0.61)

1.3

(1.1–1.5)

0.22

19.3–24.9

1968

0.26

(0.21–0.31)

0.83

(0.81–0.85)

1.6

(1.3–2.0)

0.25

(0.20–0.29)

1968

0.06

(0.04–0.09)

0.98

(0.97–0.98)

1.5

(0.9–2.6)

0.34

(0.23–0.48)

637

0.89

(0.86–0.93)

0.29

(0.25–0.34)

1.3

(1.1–1.5)

0.44

(0.40–0.48)

0.22

(0.18–0.25)

637

0.24

(0.19–0.29)

0.96

(0.93–0.98)

5.9

(3.4–11.0)

0.79

(0.68–0.87)

0.56

(0.41–0.70)

636

0.89

(0.85–0.93)

0.21

(0.17–0.25)

1.1

(0.9–1.3)

0.41

(0.37–0.45)

0.20

(0.16–0.23)

636

0.28

(0.22–0.34)

0.90

(0.87–0.93)

2.8

(1.9–4.3)

0.64

(0.54–0.73)

0.38

(0.28–0.49)