. 2019 May 8;7(5):E717–E727. doi: 10.1055/a-0751-2660

Table 2. Overview of PCCRC rates after 6 – 36 months. Comparisons among patient, tumor, and colonoscopy characteristics are provided and tested for their statistical significance.

		Numbers and PCCRC (%)	Univariate			Multiple
		Numbers and PCCRC (%)	Odds ratio	95 %CI	P value	Odds ratio	95 %CI	P value
All	FN	2126 (7.6)	–	–	–	–	–	–
All	FN + TP	28 100	–	–	–	–	–	–
All (without multiple tumors)	FN	2070 (7.6)	–	–	–	–	–	–
All (without multiple tumors)	FN + TP	27 057	–	–	–	–	–	–
All (only double tumors)	FN	56 (5.4)	–	–	–	–	–	–
All (only double tumors)	FN + TP	1043
Location			Overall test: χ ² = 143; d.f. = 4; P < 0.0001			χ ² = 141; d.f. = 4; P < 0.0001
Sigmoid colon/rectosigmoid junction	FN	519 (5.6)	0.83	0.73 – 0.94	0.004	0.86	0.75 – 0.98	0.007
Sigmoid colon/rectosigmoid junction	FN + TP	9332	0.83	0.73 – 0.94	0.004	0.86	0.75 – 0.98	0.007
Left	FN	459 (6.6)	Reference	–	–	Reference	–	–
Left	FN + TP	6911	Reference	–	–	Reference	–	–
Middle	FN	120 (11.1)	1.75	1.41 – 2.16	< 0.0001	1.79	1.44 – 2.21	< 0.0001
Middle	FN + TP	1082	1.75	1.41 – 2.16	< 0.0001	1.79	1.44 – 2.21	< 0.0001
Right	FN	738 (9.8)	1.53	1.36 – 1.73	< 0.0001	1.61	1.42 – 1.82	< 0.0001
Right	FN + TP	7513	1.53	1.36 – 1.73	< 0.0001	1.61	1.42 – 1.82	< 0.0001
Unknown/overlapping	FN	290 (8.9)	1.37	1.18 – 1.60	< 0.0001	1.34	1.14 – 1.56	< 0.0001
Unknown/overlapping	FN + TP	3262	1.37	1.18 – 1.60	< 0.0001	1.34	1.14 – 1.56	< 0.0001
Tumor behavior
In situ	FN	341 (13.3)	2.04	1.80 – 2.31	< 0.0001	2.17	1.91 – 2.45	< 0.0001
In situ	FN + TP	2224	2.04	1.80 – 2.31	< 0.0001	2.17	1.91 – 2.45	< 0.0001
Invasive	FN	1785 (7.0)	Reference	–	–	Reference	–	–
Invasive	FN + TP	23 750	Reference	–	–	Reference	–	–
Gender
Male	FN	1201 (7.5)	Reference	–	–	Reference	–	–
Male	FN + TP	15 990	Reference	–	–	Reference	–	–
Female	FN	925 (7.6)	1.02	0.93 – 1.11	0.69	0.96	0.88 – 1.05	0.37
Female	FN + TP	12 110	1.02	0.93 – 1.11	0.69	0.96	0.88 – 1.05	0.37
Deep sedation
No	FN	1673 (8.2)	1.44	1.29 – 1.60	< 0.0001	1.50	1.35 – 1.65	< 0.0001
No	FN + TP	18 700	1.44	1.29 – 1.60	< 0.0001	1.50	1.35 – 1.65	< 0.0001
Yes	FN	453 (5.9)	Reference	–	–	Reference	–	–
Yes	FN + TP	7274	Reference	–	–	Reference	–	–
Resection
No	FN	1214 (7.3)	Reference	–	–	Reference	–	–
No	FN + TP	15 497	Reference	–	–	Reference	–	–
Yes	FN	912 (8.6)	1.10	1.01 – 1.21	0.02	1.10	1.00 – 1.20	0.06
Yes	FN + TP	10 477	1.10	1.01 – 1.21	0.02	1.10	1.00 – 1.20	0.06
Speciality			Overall test: χ ² = 36.4; d.f. = 2; P < 0.0001			χ ² = 31.5; d.f. = 2; P < 0.0001
Surgeon	FN	27 (10.8)	2.04	1.34 – 3.00	0.0005	1.95	1.28 – 2.88	0.001
Surgeon	FN + TP	223	2.04	1.34 – 3.00	0.0005	1.95	1.28 – 2.88	0.001
Intern	FN	550 (7.3)	1.33	1.20 – 1.48	< 0.0001	1.31	1.18 – 1.45	< 0.0001
Intern	FN + TP	6960	1.33	1.20 – 1.48	< 0.0001	1.31	1.18 – 1.45	< 0.0001
Gastroenterologist	FN	1216 (5.6)	Reference	–	–	Reference	–	–
Gastroenterologist	FN + TP	20 527	Reference	–	–	Reference	–	–
Age			Overall test: χ ² = 34.1; d.f. = 4; P < 0.0001			χ ² = 18.0; d.f. = 4; P < 0.0001
< 55	FN	188 (6.9)	Reference	–	–	Reference	–	–
< 55	FN + TP	2534	Reference	–	–	Reference	–	–
55 – 64	FN	347 (6.8)	0.99	0.82 – 1.19	0.91	0.99	0.82 – 1.19	0.91
55 – 64	FN + TP	4726	0.99	0.82 – 1.19	0.91	0.99	0.82 – 1.19	0.91
65 – 74	FN	607 (6.8)	0.99	0.83 – 1.16	0.86	0.95	0.80 – 1.13	0.53
65 – 74	FN + TP	8365	0.99	0.83 – 1.16	0.86	0.95	0.80 – 1.13	0.53
75 – 84	FN	785 (8.6)	1.27	1.07 – 1.50	0.005	1.17	0.99 – 1.38	0.06
75 – 84	FN + TP	8363	1.27	1.07 – 1.50	0.005	1.17	0.99 – 1.38	0.06
85 and older	FN	199 (9.1)	1.35	1.10 – 1.60	0.004	1.18	0.96 – 1.46	0.12
85 and older	FN + TP	1986	1.35	1.10 – 1.60	0.004	1.18	0.96 – 1.46	0.12

FN: false negatives, TP: true positives. The reference group was estimated as the intercept of the statistical model.