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

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