Can adopting skin cancer preventive behaviors among seafarers be increased via a theory-based mobile phone-based text message intervention? A randomized clinical trial

Table 3 Comparison of the PMT variables and adopting skin cancer preventive behaviors before and after the intervention in the intervention and the control group

Variables	Intervention group		p-value*	Control group		p-value*	p-value**
Variables	Before intervention	After intervention	p-value*	Before Intervention	After intervention	p-value*	p-value**
Perceived vulnerability	25.80 ± 3.41	27.53 ± 3.04	0.002	25.67 ± 2.82	26.75 ± 3.02	0.01	0.14
Perceived severity	24.24 ± 4.03	27.80 ± 6.74	0.001	24.29 ± 3.37	26.22 ± 3.77	0.001	0.09
Response costs	32.40 ± 6.15	26.76 ± 7.47	< 0.0001	29.00 ± 5.83	29.57 ± 6.82	0.54	0.05
Response efficacy	18.21 ± 4.12	20.83 ± 3.37	< 0.0001	18.13 ± 3.32	20.55 ± 3.21	< 0.0001	0.64
Fear	11.95 ± 0.27	14.98 ± 3.5	< 0.0001	11.87 ± 0.62	12.18 ± 0.42	0.001	0.001
Perceived self-efficacy	35.93 ± 9.89	42.24 ± 5.47	< 0.0001	37.10 ± 7.01	40.00 ± 5.86	0.002	0.01
Perceived rewards	11.87 ± 3.56	9.35 ± 2.78	< 0.0001	12.02 ± 3.27	11.13 ± 4.91	0.20	0.01
Protection motivation (or behavioral intention)	19.66 ± 4.84	21.33 ± 4.15	0.01	19.27 ± 4.88	19.72 ± 4.12	0.49	0.02
Adopting skin cancer preventive behaviors	17.26 ± 5.79	21.18 ± 4.66	< 0.0001	17.23 ± 6.30	18.58 ± 3.99	0.07	0.001

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