Table 3.

Results of hierarchical linear regressions predicting difficulty with decision-making process and satisfaction with decision-making process

	Outcome variable
	Difficulty with decision-making				Satisfaction with decision-making
	R 2 Δ	(P value)	R 2	(P value)	R 2 Δ	(P value)	R 2	(P value)
Step 1: demographic characteristics			0.07	0.33			0.06	0.55
Step 2: agreement	0.00	0.63	0.08	0.40	0.00	0.35	0.06	0.56
Step 3: side effects	0.16	<0.001	0.24	<0.001	0.01	0.19	0.08	0.49
Step 4: optimism	0.07	<0.001	0.30	<0.001	0.14	<0.001	0.22	<0.01
Step 5: self-efficacy	0.08	<0.001	0.38	<0.001	0.12	<0.001	0.34	<0.001