Table 3.

Model fit and % explained variance by (a) individual blocks of factors and (b) incremental block effects when blocks entered sequentially

	Block effect	Incremental block effects
	Explained variance (%)	Total explained variance (%)	Increase in explained variance (%)
Year of survey	0.4	0.4	–
Demographic factors	3.8	4.2	3.8
Socioeconomic factors	9.8	12.0	7.8
Relational factors	6.3	16.4	4.4
Lifestyle factors	2.2	16.5	0.1
Health factors	20.4	26.5	10.0
Perceived health*	16.3	29.4	2.9

Each model contained all variables within each block

All models are significant (F statistic p < 0.001). The % variance is computed as, adjusted R²*100 (%)

*The final model with the seven blocks factors contains all studied variables