TABLE 4.

Robust regression, after intervention.

Intention	B	S(E)	t	p	β	n	F(6,228)	P > f	R2	Adj. R2	Root MSE
						235	38.75	0.00	0.55	0.54	0.86
Attitudes	0.28	0.06	4.96	0.00	0.30
Subjective norms	0.10	0.04	2.35	0.02	0.14
Perceived control	–0.08	0.03	–3.00	0.00	–0.13
Rate of respirator use	0.44	0.06	7.31	0.00	0.47
Group 1	0.30	0.14	2.11	0.04	0.10
Group 2	0.25	0.13	1.83	0.07	0.09
Intercept	1.53	0.39	3.89	0.00

Differences between the control (Group 0) and intervention groups (Group 1 and 2) found in intention to use respirators, accounting for attitudes, subjective norms, perceived control and rate of respirator use.