Table 2.

Detection rates and unadjusted risks and adjusted hazard ratios for post colonoscopy colorectal cancer (PCCRC) in patients with^* and without^# follow up event

Sessile serrated lesion Detection Rate (SSLDR) (with at least 1 follow up event)* (n=26,901)
		< 1.0	1.0 – < 2.0	2.0 – < 4.0	4.0 – < 6.0	6.0+
Unadjusted risk PCCRC	%	1.4%	0.6%	0.6%	0.4%	0.3%*
	N	58/4117	46/8075	22/3950	18/4011	18/6748
***Adjusted Hazard	HR	1.0	0.41	0.45	0.38	0.29
	95% CI	Reference	0.28–0.61	0.27–0.75	0.22–0.66	0.16–0.50
Sessile serrated lesion Detection Rate (SSLDR) (with/without follow up event)**(n= 114,197)
		< 1.0	1.0 – < 2.0	2.0 – < 4.0	4.0 – < 6.0	6.0+
Unadjusted risk PCCRC	%	0.31%	0.18%	0.11%	0.09%	0.06%*
	N	58/18793	46/25824	22/19693	18/19518	18/30369
***Adjusted Hazard	HR	1.0	0.46	0.53	0.49	0.36
	95% CI	Reference	0.31–0.68	032–0.88	0.29–0.85	0.21–0.62

^*p < 0.0001

^***Cox regression was used to model the hazard of PCCRC on SSLDR controlling for age, sex, presence of CSSPs, presence of advanced adenomas, year of index exam, indication of index exam, bowel prep quality, and having more than 1 surveillance exam.

^**Censored at 1^st follow up or 6 months prior to last linkage date with the NH State Cancer Registry