Multivariate analysis of cognitive impairment in the full sample
| Variable | Univariate OR (95%CI) | Multivariate OR* (95%CI) | P value |
| Age, years | 1.044 (1.013 to 1.076) | 1.043 (1.008 to 1.080) | 0.016 |
| Female sex | 1.778 (0.744 to 4.249) | ||
| Educational level* | 0.201 (0.108 to 0.375) | 0.178 (0.090 to 0.350) | <0.001 |
| Obesity (BMI≥30) | 1.879 (0.853 to 4.141) | ||
| Arterial hypertension | 1.336 (0.632 to 2.823) | ||
| Dyslipidaemia | 1.857 (0.803 to 4.290) | ||
| Rheumatoid arthritis | 2.250 (1.144 to 4.425) | 3.043 (1.334 to 6.940) | 0.008 |
Nagelkerke R2 = 0.404. The variables included in the equation were age, sex, educational level, obesity, arterial hypertension and rheumatoid arthritis.
*Educational level: secondary education or university compared with primary education.
BMI, body mass index.