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. 2012 Nov 12;2(6):e000991. doi: 10.1136/bmjopen-2012-000991

Table 3.

HR of obtaining voluntary early pension or disability pension in the study period according to baseline information

Risk factors Voluntary early pension n=904
Disability pension n=540
HR 95(%) CI HR 95(%) CI
Education grade
 Secondary school 1 1
 10 years primary school or 0.83 0.65 to 1.06 0.92 0.71 to 1.18
 Basic vocational course
 7–9 years primary school 3.19 2.65 to 3.85 1.27 1.02 to 1.57
Vocational status spouse
 Transfer income versus paid work 0.55 0.46 to 0.67 1.11 0.85 to 1.45
Marital status
 Living alone versus live in partner 0.64 0.51 to 0.80 1.54 1.14 to 2.09
Workers compensation
 Case 1.02 0.84 to 1.23 1.51 1.23 to 1.87
Workplace
 nursery home/homecare versus Hospital 1.04 0.88 to 1.23 1.08 0.87 to 1.35
Work hours
 Mainly day work 1 1
 mainly evening work 1.03 0.86 to 1.23 1.29 1.03 to 1.60
 Mainly night work 1.16 0.92 to 1.46 1.18 0.87 to 1.61
 Mixed 0.90 0.74 to 1.11 0.97 0.74 to 1.27
Heaviness of care duties
Index* high 0.79 0.62 to 1.01 0.98 0.74–1.29
RPE† (range 0–14)
 high ≥8 0.96 0.82 to 1.13 1.23 1.00 to 1.51
Decision latitude -low 1.09 0.92 to 1.28 0.90 0.72 to 1.12
Demand –high (%) 1.28 1.09 to 1.50 0.92 0.75 to 1.13
Number of days LBP the last 12 month altogether
 0 days 0.98 0.77 to 1.24 1.36 0.93 to 1.26
 1–7 days 0.71 0.56 to 0.89 1.34 0.94 to 1.92
 8–30 days 0.71 0.55 to 0.91 1.35 0.92 to 1.97
 31–90 days 0.58 0.40 to 0.82 1.29 0.81 to 2.05
 More than 90 days 0.72 0.54 to 0.97 2.27 1.55 to 3.34
Usual back pain: radiation below knee level 0.90 0.73 to 1.10 1.18 0.05 to 1.48
Ever acute LBP in relation to patient handling or other work tasks 1.07 0.89 to 1.27 1.01 0.80 to 1.28
More than 30 days of sick leave the last year because of upper limb disorder 1.04 0.72 to 1.50 2.18 1.57 to 3.01
More than 30 days of sick leave the last year because of lower limb disorder 0.91 0.63 to 1.31 1.51 1.08 to 2.11
Cardiovascular disease 1.47 1.27 to 1.69 1.14 0.94 to 1.38
Lung diseases 0.88 0.75 to 1.05 1.14 0.93 to 1.39
Skin diseases 0.61 0.49 to 0.75 1.13 0.90 to 1.42
Gastro intestinal diseases 1.21 1.00 to 1.47 1.39 1.10 to 1.76
Rheumatologic inflammatory diseases 1.76 1.25 to 2.48 2.42 1.67 to 3.52
Nervous disorder 0.87 0.62 to 1.24 1.31 0.92 to 1.87
Current smoking 0.80 0.69 to 0.93 1.20 0.98 to 1.45
BMI
 Severe overweight > 30 0.87 0.64 to 1.17 0.85 0.57 to 1.26
Physical activity‡ low 0.87 0.74 to 1.02 0.94 0.77 to 1.15

LBP, low-back pain .

*Index based on part of clients needing full care in combination with number of person handlings a day.

†Rated perceived exertion 0–14 scale, anchored 1=very very light and 13=very very strenuous.

‡Physical activity low: less than ‘at least one time a week strenuous physical activity’.