Step | Predictor variables | R2 | ∆R2 | F, df and p |
---|---|---|---|---|
1 | Socio-demographic variables – sex, school year and type | 0.076 | 0.076 | F(8, 1386) = 14.22, < 0.001 |
2 | Mothers/female guardian and fathers male guardian EC use | 0.097 | 0.021 | F(2, 1384) = 16.41, < 0.001 |
3 | Current pupil EC use | 0.295 | 0.197 | F(1, 1383) = 386.7, < 0.001 |
4 | Knowledge of EC | 0.296 | 0.001 | F(1, 1382) = 2.76, 0.097 |
5 | Direct TPB measures | 0.571 | 0.275 | F(4, 1378) = 220.7, < 0.001 |
6 | Indirect TPB measures | 0.653 | 0.083 | F(3, 1375) = 109.2, < 0.001 |