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. 2013 Oct 16;8(10):e78268. doi: 10.1371/journal.pone.0078268

Table 4. Associations between cognitive ability at conscription 1969-70 and disability pension 1991-1999/2000-2008, in crude and adjusted hazard ratios (HR’s), with 95% confidence intervals, per one (1) point decrease in cognitive ability score on a stanine scale.

Disability pension 1991-1999
Disability pension 2000-2008
N=44 144, 1480 DP’s granted
N=42 045,3419 DP’s granted
HR CI 95% Reduction in HR (%) HR CI 95% Reduction in HR (%)
Crude 1.32 1.29-1.36 1.23 1.21-1.25
Adjusted for:
Pre labour market entry factors a 1.23 1.20-1.27 28 1.17 1.15-1.19 26
Adulthood, post labour market entry factorsb 1.16 1.13-1.20 50 1.11 1.09-1.13 52
Full adjustmentc 1.13 1.10-1.17 59 1.09 1.07-1.11 61

a Childhood socioeconomic position, personality aspects, health-related lifestyle factors (smoking, risky use of alcohol, high BMI score) and psychiatric and musculoskeletal diagnoses at conscription.

b Unemployment, education, attained socioeconomic position, income.

c All of the above.