Table 4

 Standardised incidence ratios (SIR) for all-cause disability and disability due to musculoskeletal disorders and accidents by age, nationality, occupation, and duration of employment

All causesMusculoskeletal system (ICD 710–739)Accidents (ICD 800–959)
ObsReference “GWF”Reference “BCW”ObsReference “GWF”Reference “BCW”ObsReference “GWF”Reference “BCW”
SIR (95% CI)SIR (95% CI)SIR (95% CI)SIR (95% CI)SIR (95% CI)SIR (95% CI)
GWF, general work force; BCW, blue collar workers; Obs, number of observed cases; SIR, standardised incidence ratio; 95% CI, 95% confidence interval.
Total22471.47 (1.41–1.53)1.11 (1.07–1.16)9752.16 (2.03–2.30)1.53 (1.44–1.63)992.49 (2.02–3.03)1.81 (1.47–2.20)
Age (years) (during follow up)
    25–39570.97 (0.73–1.26)0.81 (0.61–1.05)132.12 (1.13–3.63)2.05 (1.09–3.51)71.30 (0.52–2.67)1.04 (0.42–2.15)
    40–44571.03 (0.78–1.34)0.78 (0.59–1.01)121.38 (0.71–2.41)1.12 (0.58–1.96)20.85 (0.10–3.06)0.61 (0.08–2.32)
    45–491271.13 (0.94–1.34)0.85 (0.71–1.01)291.32 (0.88–1.89)1.03 (0.69–1.47)71.68 (0.67–3.46)1.24 (0.50–2.55)
    50–544131.40 (1.26–1.54)1.07 (0.97–1.18)1402.09 (1.76–2.46)1.53 (1.29–1.80)212.53 (1.57–3.87)1.82 (1.13–2.78)
    55–5911341.56 (1.47–1.66)1.22 (1.15–1.29)5332.22 (2.04–2.42)1.61 (1.47–1.75)493.33 (2.47–4.41)2.42 (1.79–3.21)
    60–644591.69 (1.54–1.85)1.15 (1.05–1.26)2482.37 (2.09–2.69)1.50 (1.32–1.69)132.95 (1.57–5.05)1.90 (1.01–3.26)
Nationality
    German20171.54 (1.48–1.61)1.17 (1.12–1.22)8952.29 (2.14–2.45)1.62 (1.52–1.73)912.71 (2.18–3.33)1.97 (1.59–2.42)
    Other2271.04 (0.91–1.19)0.78(0.69–0.89)791.34 (1.06–1.67)0.95 (0.75–1.18)81.31 (0.57–2.58)0.95 (0.41–1.88)
Occupation
    Plumbers1690.96 (0.82–1.12)0.72 (0.62–0–84)701.42 (1.11–1.80)1.00 (0.78–1.27)71.36 (0.55–2.81)0.99 (0.40–2.05)
    Carpenters2661.41 (1.25–1.59)1.07 (0.94–1.21)1282.28 (1.90–2.71)1.61 (1.35–1.92)163.16 (1.81–5.13)2.31 (1.32–3.75)
    Painters2521.01 (0.89–1.15)0.76 (0.67–0.86)931.28 (1.03–1.56)0.90 (0.72–1.10)132.00 (1.06–3.42)1.45 (0.77–2.48)
    Plasterers3481.70 (1.53–1.89)1.29 (1.16–1.44)1642.67 (2.28–3.11)1.89 (1.62–2.21)214.14 (2.56–6.33)3.00 (1.86–4.59)
    Bricklayers8911.74 (1.63–1.86)1.32 (1.23–1.41)4032.65 (2.40–2.92)1.88 (1.70–2.07)292.25 (1.51–3.23)1.63(1.09–2.34)
    Labourers3211.62 (1.45–1.81)1.22 (1.09–1.37)1171.99 (1.64–2.38)1.40 (1.16–1.68)132.54 (1.35–4.34)1.85 (0.99–3.17)
Duration of employment
    <15 years2011.15 (0.99–1.32)0.88 (0.76–1.01)631.56 (1.20–2.00)1.14 (0.87–1.46)91.25 (0.57–2.37)0.95 (0.43–1.80)
    15–29 years5541.28 (1.18–1.39)0.96 (0.89–1.05)2131.78 (1.55–2.04)1.27 (1.10–1.45)242.14 (1.37–3.19)1.54 (0.99–2.29)
    ⩾30 years12461.67 (1.58–1.76)1.26 (1.19–1.33)5962.46 (2.27–2.67)1.72 (1.59–1.87)573.57 (2.70–4.62)2.54 (1.93–3.30)