Table 3.

Estimation results of the logit regression models on colonoscopy use and smoking between baseline and follow-up

	Colonoscopy use between baseline and follow-up (vs. no use)				Smoking between baseline and follow-up (vs. no smoking)
Observations	473				442
Pseudo R2	0.288				0.449
Area under ROC curve	0.842				0.917
Somers’ D	0.566				0.794
Brier score	0.157				0.108
	OR	p-value		lrtest	OR	p-value		lrtest
Carrier status × Receiver status at follow-up × Previous cancer diagnosis at follow-up
Carrier (vs. non-carrier)	2.358	0.089		<0.001***	2.226	0.302		0.031*
Receiver (vs. non-receiver)	1.213	0.587			4.147	0.037*
Previous cancer diagnosis (vs. no diagnosis)	0.640	0.638			27.499	0.120
Carrier receiver (vs. non-carrier non-receiver)	10.822	0.001***			0.193	0.067
Carrier with previous cancer diagnosis (vs. non-carrier with no diagnosis)	2.001	0.604			0.084	0.344
Receiver with previous cancer diagnosis (vs. non-receiver with no diagnosis)	0.579	0.600			0.006	0.026*
Carrier receiver with previous cancer diagnosis (vs. non-carrier non-receiver with no diagnosis)	0.198	0.309			314.316	0.043*
Linear combination
Receiver carrier (vs. non-receiver carrier) with no previous cancer diagnosis	13.124	<0.001***			0.802	0.702
Receiver carrier (vs. non-receiver carrier) with previous cancer diagnosis	1.502	0.698			1.511	0.800
Receiver non-carrier (vs. non-receiver non-carrier) with no previous cancer diagnosis	1.213	0.587			4.147	0.037*
Receiver non-carrier (vs. non-receiver non-carrier) with previous cancer diagnosis	0.702	0.717			0.025	0.089
Socio-demographic factors
Age at follow-up
Age (years)	1.132	0.034*		0.079	0.852	0.060		<0.001***
Age squared	0.999	0.049*			1.001	0.262
Female (vs. male)	2.489	<0.001***			1.213	0.563
Married or common-law (vs. single)	1.100	0.759			0.397	0.020*
Education (vs. less than high school)
High, vocational, or training school	1.503	0.176		0.380	1.118	0.764		0.010**
College, university, or more	1.160	0.655			0.321	0.019*
Colorectal cancer awareness
Degree of relatedness to family probands (vs. self or identical twin)
1st degree	0.721	0.700		0.020*	0.808	0.820		0.776
2nd degree	0.460	0.356			0.753	0.754
3rd degree	0.400	0.286			0.438	0.389
Higher degree	0.245	0.091			0.788	0.794
Baseline health behaviours
Colonoscopy use before baseline (vs. no use)	4.414	<0.001***
Smoking before baseline (vs. no smoking)					210.723	<0.001***
Constant	0.015	0.014*			0.866	0.948

OR, odds ratio. ROC, receiver operating characteristic. lrtest, likelihood ratio test, using chi-squared statistics. vs., versus.

Significance:

^***for 0.001;

^**for 0.01;

^*for 0.05.