Odds of probable cognitive impairment according to MMSE scores and associations with the selected demographic and clinical variables in the total sample and by gender
| Independent variables | Overall | Females | Males |
| OR (95% CI; p value) | OR (95% CI; p value) | OR (95% CI; p value) | |
| Gender (female) | 2.72 (2.31 to 3.47; p<0.0001) | – | – |
| Age (centred)* | 1.11 (1.10 to 1.13; p<0.0001) | 1.12 (1.10 to 1.14; p<0.0001) | 1.18 (1.09 to 1.15; p<0.0001) |
| Level of education (≤primary) | 2.87 (2.26 to 3.65; p<0.0001) | 3.18 (2.36 to 4.29; p<0.0001) | 2.45 (1.62 to 3,71; p<0.0001) |
| Obese (yes) | 0.92 (0.74 to 1.14; p=0.447) | 0.89 (0.96 to 1.15; p=0.387) | 1.02 (0.70 to 1.51; p=0.903) |
| Current smoker (yes) | 0.77 (0.53 to 1.13; p=0.188) | 0.66 (0.37 to 1.18; p=0.164) | 0,94 (0.56 to 1.58; p=0.825) |
| Monthly alcohol intake (kg) | 1.19 (1.03 to 1.365; p=0.024) | 0.99 (0.99 to 1.06; p=0.937) | 1.25 (1.010 to 1.45; p=0.014) |
| At least one sleep complaint (yes) | 1.63 (1.15 to 2.32; p=0.006) | 1.54 (1.12 to 2.09; p=0.007) | 1.08 (0.71 to 1,64; p=0.715) |
| Hypertension (yes) | 0.92 (0.73 to 1.61; p=0.475) | 0.89 (0.67 to 1.20; p=0.482) | 0.94 (0.63 to 1.41; p=0.777) |
| Type 2 diabetes (yes) | 0.92 (0.73 to 1.18; p=0.548) | 0.93 (0.69 to 1.25; p=0.645) | 0.91 (0.58 to 1.40; p=0.656) |
| Dyslipidaemia (yes) | 0.80 (0.65 to 0.98; p=0.038) | 0.70 (0.55 to 0.92; p=0.010) | 1.01 (0.68 to 1.49; p=0.986) |
| Depression (yes) | 1.90 (1.43 to 2.52; p<0.0001) | 1.74 (1.24 to 2.42; p=0.001) | 2.61 (1.50 to 4.55; p<0.0001) |
| Traumatic brain injury (yes) | 1.45 (0.80 to 2.65; p=0.218) | 0.83 (0.37 to 1.71; p=0.569) | 3.60 (1.41 to 9,16; p=0.007) |
| PHC unit operation (public vs private) | 0.59 (0.29 to 2.66; p=0.489) | 0.60 (0.11 to 3.39; p=0.564) | 0.57 (0.19 to 1.68; p=0.311) |
Mean VIF=1.09. All variables had VIF scores <1.5
*AOR for the unit increase above the mean.
MMSE, mini-mental state examination; PHC, primary healthcare; VIF, variance inflation factor.