Table 4.

Multivariable logistic regression analyses for impact of the invitation interval on interval cancer rate

Invitation interval (months)	n	Interval CRC per 10 000 negative FITs	Interval CRC per 10 000 person-years	OR	95% CI
≤24–25	1136	7.3	3.6
25–26	102	6.2	2.9	1.11	0.91–1.37
26–27	136	6.3	2.8	1.18	0.98–1.41
27–28	104	6.6	2.9	1.24	1.01–1.53
28–29	63	7.8	3.3	1.41	1.09–1.83
>29	23	7.3	2.9	1.31	0.86–1.98

All ORs are adjusted for confounding variables age, sex and invitation round.

*Indicates that the alternative model (including the time period) better fitted the data. All ORs are presented for the alternative model including time period, regardless if it improved the model.

CRC, colorectal cancer; FIT, faecal immunochemical testing.