Table 4.

Validation of the Identification and Intervention for Dementia in Elderly Africans (IDEA) cognitive screen in 2013: Multivariable logistic regression model with dichotomised cognitive screen as the dependent (outcome) variable

	Odds ratio (95% CI)	Significance (p)
Major cognitive impairment present	108.82 (36.31 to 326.14)	<0.001
Female	3.32 (1.20 to 9.19)	0.021
No formal education	1.07 (0.40 to 2.88)	0.895
Age
65-69 years	1
70-74 years	3.26 (0.83 to 12.74)	0.090
75-79 years	3.52 (0.87 to 14.31)	0.079
80-84 years	5.39 (1.05 to 27.68)	0.044
85 years and over	6.80 (1.58 to 29.21)	0.010

Hosmer and Lemeshow goodness of fit test, χ² (7) = 5.60, p = 0.587.

Nagelkerke R² = 0.66.