Table 2.
Adjusteda risk ratios for sociodemographic factors and depression, CFAS I and CFAS II
| CFAS I risk ratio (95% CI) | P-value | CFAS II risk ratio (95% CI) | P-value | Test for interaction (CFAS I and CFAS II) P-value | |
|---|---|---|---|---|---|
| Gender | |||||
| Male | Ref | 0.40 | Ref | <0.0001 | 0.16 |
| Female | 1.25 (0.74–2.11) | 1.87 (1.55–2.26) | |||
| Age group | |||||
| 65–74 years | Ref | 0.78 | Ref | 0.23 | 0.44 |
| 75–84 years | 1.06 (0.64–1.76) | 1.02 (0.85–1.26) | |||
| ≥85 years | 1.30 (0.62–2.72) | 0.79 (0.59–1.06) | |||
| Residence | |||||
| Community | Ref | 0.74 | Ref | 0.12 | 0.47 |
| Care home | 1.12 (0.59–2.13) | 1.51 (0.89–2.57) | |||
| Centre | |||||
| Cambridgeshire | Ref | 0.0022 | Ref | 0.027 | 0.0001 |
| Newcastle | 3.21 (1.56–6.59) | 0.74 (0.58–0.94) | |||
| Nottingham | 1.80 (0.84–3.84) | 0.94 (0.76–1.17) | |||
| Townsend deprivation index (quartiles) | |||||
| Q1 (least deprived) | Ref | 0.018 | Ref | 0.0002 | 0.0096 |
| Q2 | 2.18 (1.06–4.49) | 0.89 (0.69–1.13) | |||
| Q3 | 3.07 (1.51–6.25) | 1.04 (0.82–1.33) | |||
| Q4 (most deprived) | 2.27 (1.08–4.75) | 1.56 (1.22–2.00) |
CFAS, Cognitive Function and Ageing Studies; Ref, reference value; Q, quartile.
a.
Risk ratios adjusted for all other covariates.