Table 5.

Regression coefficients of demographic information and motivational constructs on dietary behaviour (n 1142)

	Fruits			Vegetables			Fish			Unhealthy snacks
Variable	B	se	β	B	se	β	B	se	β	B	se	β
Intercept	−0.79	0.33		30.83	24.64		−0.34	0.34		2.98	0.54
Age	0.004	0.003	0.05	−0.21	0.21	−0.03	0.02	0.003	0.19	−0.01	0.003	−0.08
Gendera	−0.04	0.07	−0.02	−6.46	5.00	−0.04	0.10	0.07	0.05	0.13	0.11	0.04
Education highb	0.11	0.07	0.05	29.92	5.54	0.17	0.19	0.08	0.08	−0.12	0.12	−0.03
Education lowb	0.12	0.16	0.02	25.83	12.16	0.06	0.09	0.17	0.02	0.96	0.26	0.11
Marital statusc	−0.03	0.07	−0.01	−0.66	5.19	−0.004	0.12	0.07	0.05	−0.003	0.11	−0.001
Workd	0.10	0.07	0.04	−4.02	5.17	−0.02	−0.15	0.07	−0.06	−0.25	0.11	−0.07
Impairmente	0.04	0.16	0.01	−13.99	12.13	−0.03	−0.18	0.17	−0.03	−0.66	0.26	−0.08
BMI	−0.003	0.01	−0.01	0.42	0.50	0.03	−0.005	0.01	−0.02	0.005	0.01	0.01
Health status	0.004	0.002	0.06	0.54	0.18	0.10	0.003	0.002	0.05	−0.003	0.004	−0.03
IM diet	0.14	0.04	0.13	13.12	3.00	0.16	0.12	0.04	0.11	−0.06	0.07	−0.04
IM PA	0.10	0.04	0.10	−3.37	2.73	−0.04	0.02	0.04	0.02	−0.16	0.06	−0.10
AUM diet	0.20	0.05	0.22	8.06	3.45	0.12	−0.03	0.05	−0.04	−0.33	0.07	−0.22
AUM PA	−0.07	0.05	−0.07	−1.73	3.63	−0.02	0.004	0.05	0.004	0.26	0.08	0.17
IJM	−0.02	0.03	−0.03	2.29	2.06	0.04	−0.01	0.03	−0.01	0.06	0.04	0.05
ER	0.01	0.04	0.01	−5.46	2.82	−0.08	0.04	0.04	0.05	0.12	0.06	0.09
ER diet	−0.01	0.03	−0.02	1.12	2.37	0.02	−0.03	0.03	−0.03	−0.09	0.05	−0.07
Amotivation	0.05	0.03	0.05	−3.29	2.42	−0.05	−0.02	0.03	−0.02	0.07	0.05	0.05
R2/R2 adj.	0.107/0.093*			0.117/0.104*			0.081/0.067†			0.090/0.077*
ΔR2/ΔR2 adj.	0.074/0.068			0.058/0.053			0.011/0.004			0.038/0.032

B, unstandardised coefficient; se, standard error; β, standardised coefficient; PA, physical activity; IM, intrinsic motivation; AUM, autonomous motivation; ER, external regulation; IJM, introjected motivation; adj., adjusted; ΔR², the additional explained variance compared to the basic model.

Note: The bold values indicate significance after the Bonferroni correction (P < 0.0125).

^aWomen are the reference category.

^bMedium education is the reference category.

^cNo partner is the reference category.

^dUnemployed is the reference category.

^eNot physically impaired is the reference category.

^*The model was significantly better than the basic model (P < 0.05).

^†Marginal significance (P < 0.1).