Table 4. Factors (age, sex, setting and level of formal education) associated with being categorized as frail and pre-frail. Odds ratio, 95% confidence intervals in brackets.

Variables	Frailty groups
	Frail	Pre-frail
Age >74y	7.3 (3.4-15.4)**	4.0 (2.0-7.9)**
Males	0.4 (0.2-8)*	0.6 (0.3-1.0)
Rural setting	0.2 (0.1-0.5)**	0.4 (0.2-0.7)**
No formal education	2.0 (1.0-3.9)*	1.0 (0.5-1.9)
12-24 months of education	2.0 (1.0-4.1)*	1.3 (0.7-2.4)

Categories/groups of references in the models: Non-frail, Age 60-74y, Females, Urban setting, 25-48 months of education.

^*p < 0.05.

^**p < 0.01.