Table 6.

PLS predict assessment.

PLS prediction summary
		Q2
AR		0.186
ATT		0.197
CVB		0.324
SN		0.122
PLS prediction summary
	PLS			LM			PLS-LM
	RMSE	MAE	Q2 predict	RMSE	MAE	Q2 predict	RMSE	MAE	Q2 predict
AR3	1.657	1.34	0.159	1.651	1.321	0.166	0.006	0.019	−0.007
AR2	1.654	1.321	0.201	1.658	1.323	0.198	−0.004	−0.002	0.003
AR4	1.614	1.293	0.162	1.562	1.242	0.214	0.052	0.051	−0.052
AR1	1.556	1.238	0.222	1.544	1.205	0.234	0.012	0.033	−0.012
Att1	1.777	1.381	0.167	1.547	1.08	0.367	0.23	0.301	−0.2
Att3	1.656	1.306	0.241	1.599	1.232	0.291	0.057	0.074	−0.05
Att4	1.761	1.448	0.194	1.726	1.394	0.225	0.035	0.054	−0.031
Att2	1.698	1.336	0.188	1.591	1.181	0.287	0.107	0.155	−0.099
CVB1	1.605	1.286	0.235	1.587	1.221	0.251	0.018	0.065	−0.016
CVB6	1.579	1.239	0.216	1.564	1.206	0.23	0.015	0.033	−0.014
CVB5	1.616	1.325	0.225	1.604	1.273	0.236	0.012	0.052	−0.011
CVB3	1.587	1.266	0.262	1.555	1.178	0.291	0.032	0.088	−0.029
CVB4	1.569	1.263	0.258	1.553	1.195	0.273	0.016	0.068	−0.015
CVB2	1.651	1.326	0.225	1.648	1.284	0.228	0.003	0.042	−0.003
SN2	1.784	1.488	0.152	1.791	1.485	0.146	−0.007	0.003	0.006
SN5	1.803	1.493	0.09	1.795	1.483	0.099	0.008	0.01	−0.009
SN4	1.907	1.597	0.015	1.882	1.567	0.041	0.025	0.03	−0.026
SN1	1.667	1.313	0.171	1.59	1.214	0.246	0.077	0.099	−0.075
SN3	1.721	1.409	0.176	1.724	1.399	0.173	−0.003	0.01	0.003

ATT, attitude; SN, subjective norm; PBC, perceived behavioral control; AR, anticipated regret; CVB, COVID-19 vaccination behavior; PS, perceived susceptibility; LM, linear regression model; RMSE, root mean square error; and MAE, mean absolute error.