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. 2008 Sep 1;58(554):619–623. doi: 10.3399/bjgp08X330744

Table 2.

Results of Cox regression analysis in full sample and separately for sexes: risk of transition to disability pension according to diagnosis and sociodemographic variables: n = 326 men and n = 692 women on long-term sick-leave with a diagnosis of dizziness or vertigo.

All Men Women



Variables HR 95% CI P-value HR 95% CI P-value HR 95% CI P-value
Diagnosis
 N17 1.0 1.0 1.0
 H82 1.5 1.1 to 1.9 0.003 1.0 0.6 to 1.6 0.992 1.7 1.3 to 2.4 <0.001

Age, years
 16–39 1.0 1.0 1.0
 40–49 2.7 1.7 to 4.2 2.4 1.0 to 5.7 2.7 1.6 to 4.7
 50–62 6.6 4.3 to 10.1 <0.001 6.2 2.8 to 13.5 <0.001 6.6 3.9 to 10.9 <0.001

Education, number of years
 Academic, ≥15 1.0 1.0 1.0
 Higher middle, 12–14 1.0 0.6 to 1.6 0.9 0.4 to 2.1 0.9 0.5 to 1.7
 Lower middle, 10–11 1.6 1.1 to 2.5 1.3 0.5 to 3.1 1.7 1.0 to 2.8
 Basic, 7–9 2.0 1.2 to 3.2 0.001 1.8 0.7 to 4.4 0.024 1.9 1.1 to 3.4 0.004

Annual income 1996, NOK
 ≥240 000 1.0 1.0 1,0
 160 000–239 999 1.0 0.7 to 1.5 1.2 0.7 to 2.0 1.0 0.6 to 1.7
 80 000–159 999 1.2 0.8 to 1.8 0.8 0.3 to 2.1 1.3 0.7 to 2.3
 0–79 999 1.2 0.6 to 2.2 0.120 0.4 0.0 to 2.8 0.490 1.4 0.7 to 2.8 0.170

Sex
 Men 1.0
 Women 1.1 0.8 to 1.4 0.670

HR = hazard ratio. DP = disability pension. NOK = Norwegian Krones (1 GBP = 9.7 NOK).