Table 1.

Knowledge of CRC and screening, and attitudes toward CRC screening before and after exposure to the PDS

Scales	Mean before	SD	Mean after	SD	F value	Effect size
CRC and screening knowledge	9.57	2.74	11.23	1.47	30.72**	0.28
Salience and coherence	15.72	4.09	16.99	2.72	6.32*	0.07
Cancer worries	5.59	2.42	5.04	2.02	7.14**	0.08
Perceived susceptibility	11.96	4.47	14.17	4.06	16.05**	0.17
Social influence	14.83	4.04	15.91	3.48	4.30*	0.05
Response efficacy	7.47	1.73	8.51	1.24	22.71**	0.22

Pre and post-exposure scores were compared using repeated measures ANOVA. Effect size is partial η².

*p<0.05; **p<0.01.

CRC, colorectal cancer; PDS, personalized decision support tool.