Table 3. Mean, correlation and Cronbach’s α values per item before and after BeP3 and BaP1 removal.

Questions	Mean	Standard deviation	Item-total correlation	α		Mean	Standard deviation	Item-total correlation	α
	Initial form					Final form (no BeP3 and BaP1)
SuP1	950.2	301.9	0.53	0.78		871.3	287.9	0.57	0.81
SuP2	957.6	301.3	0.47	0.78		878.7	287.3	0.51	0.81
SuP3	959.8	304.6	0.36	0.79		880.9	291.0	0.39	0.82
SuP4	965.4	304.1	0.52	0.78		886.8	290.9	0.54	0.81
SuP5	954.5	307.8	0.37	0.79		876.0	295.1	0.36	0.82
SeP1	950.5	303.7	0.38	0.79		872.2	290.8	0.39	0.82
SeP2	963.3	302.3	0.54	0.78		884.9	289.5	0.54	0.81
SeP3	951.5	301.3	0.49	0.78		873.2	288.6	0.49	0.81
SeP4	956.1	299.8	0.58	0.78		877.5	287.0	0.59	0.81
SeP5	956.2	308.3	0.37	0.79		877.4	295.2	0.38	0.82
BeP1	985.1	313.8	0.34	0.79		906.3	300.9	0.36	0.82
BeP2	974.5	309.7	0.32	0.79		895.8	296.9	0.33	0.82
BeP3	983.4	316.3	0.06	0.80		-	-	-	-
BeP4	962.6	306.8	0.38	0.79		884.2	294.2	0.37	0.82
BeP5	945.6	304.1	0.42	0.78		867.0	292.2	0.40	0.81
BaP1	933.3	307.7	0.08	0.82		-	-	-	-
BaP2	977.0	313.2	0.11	0.80		897.9	299.4	0.14	0.83
BaP3	948.2	306.0	0.22	0.80		869.6	293.5	0.21	0.83
BaP4	931.6	305.6	0.31	0.79		852.7	292.8	0.31	0.82
BaP5	949.1	311.7	0.15	0.80		870.4	300.1	0.11	0.83
MoS1	928.2	306.5	0.38	0.79		849.2	293.9	0.37	0.82
MoS2	951.3	305.3	0.39	0.79		872.6	292.4	0.40	0.81
MoS3	948.7	304.8	0.43	0.78		870.3	291.9	0.44	0.81
MoS4	948.2	303.9	0.37	0.79		869.8	290.6	0.39	0.82

PSU: perceived susceptibility; PSE: perceived severity; PBE: perceived benefits; PBA: perceived barriers; PHM: pro-health motivation.

Note: The numbers represent the question numbers for each model dimension. Values are in units of the centiMax scale ^® .