Table 1.

Variance described through factors calculated by principal component analysis

Component	Total variance
	% of variance	% of cumulative variance
First	24.3	24.3
Second	23.4	47.7
Third	20.2	68.0
Component matrix
Predisposing factors	Component
	First	Second	Third
Age	0.550	−0.222	0.464
Gender	0.418	0.488	−0.627
Education	−0.386	0.668	0.0015
Religion	−0.028	0.613	0.634
Knowledge	0.767	0.251	0.039