Psychological effects of colorectal cancer screening: Participants vs individuals not invited

Table 1 Demographic characteristics of the three randomized groups measured at baseline

	FS (Std residual)	FIT (Std residual)	Control (Std residual)	P comparing 3 groups
Norwegian nationality, %	95.9% (0.4)	94.6% (-0.2)	94.5% (-0.2)	0.08
Not married/cohabitant, %	18.0% (-2.0)1	20.0% (0.0)	22.0% (2.0)1	< 0.01
Higher education, %	45.3% (-0.8)	43.6% (-2.1)1	51.7% (3.2)1	< 0.01
Employed, %	48.9% (-0.9)	49.6% (-0.6)	52.9% (1.6)1	0.03
Women, %	50.1% (-1.0)	52.4% (0.6)	52.2% (0.4)	0.25
Mean age, yr	63.5	62.5	62.7	< 0.012

¹Standardized residuals outside ± 1.96 are considered statistically significant;

²ANOVA. FS: Flexible sigmoidoscopy; FIT: Faecal immunochemical test.