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Table 4 Odds ratios (ORs) with 95% confidence intervals (95% CI) for exercise in women aged 53-84 years, obtained by applying mixed models with random intercepts that include the interaction between age and cohort, age-squared, and cohort-squared

From: The longitudinal exercise trend among older Swedes aged 53–84 years – a 16-year follow-up study

   Model I Model II
Variable Category OR 95% CI OR 95% CI
Fixed effects      
Rate of change      
Agec (Int) Centred at 67 years 0.93 0.90-0.97 0.98 0.96-1.012
Agec*cohortc   1.017 1.011-1.024 1.009 1.006-1.011
Agec-squared   1.005 1.001-1.010 1.005 1.001-1.010
Initial status      
Cohortc Centred at 1924 0.98 0.95-1.02 1.02 1.00-1.05
Cohortc-squared   1.008 1.005-1.012 1.005 1.003-1.006
Educational level Low-middle    1  
High    1.23 0.96-1.58
BMI (kg/m 2 ) Centred at 23    0.93 0.91-0.96
Smoking Never    1  
Former    1.01 0.78-1.30
Daily    0.48 0.35-0.65
Self-reported health status Good    2.57 2.08-3.19
Poor    1  
Random effects (unstructured)     
Var (constant) 1.51 1.01-2.23 1.05 0.66-1.69
  1. Model II is also adjusted for educational level, BMI, and self-reported health.