Modified scoring model incorporating waist-hip ratio for predicting advanced colorectal neoplasia

Table 1 Characteristics of the derivation and validation cohorts, n (%)

	Derivation cohort (n = 4592)	Validation cohort (n = 1891)	P value
Age (years), mean ± SD	45.8 ± 12.4	47.1 ± 12.4	0.000
Sex, male	2458 (53.5)	1035 (54.7)	0.381
Regular excise	2090 (45.6)	670 (35.4)	0.000
Smoking	809 (17.6)	378 (20.0)	0.029
Alcohol consumption	606 (13.2)	352 (18.6)	0.000
Use of non-steroidal anti-inflammatory drugs	105 (2.3)	89 (4.7)	0.000
Hypertension	542 (11.8)	276 (14.6)	0.003
Diabetes mellitus	222 (4.9)	104 (5.5)	0.289
Hyperlipemia	410 (8.9)	266 (14.1)	0.000
Colorectal cancer family history	347 (7.6)	136 (7.2)	0.640
Post-cholecystectomy	130 (2.9)	34 (1.8)	0.015
Rectal bleeding	199 (4.3)	90 (4.8)	0.499
Change of bowel habit	275 (6.0)	120 (6.3)	0.585
Abdominal pain	731 (15.9)	354 (18.7)	0.105
Body mess index (kg/m2), mean ± SD	23.3 ± 3.3	23.4 ± 3.3	0.264
Waist circumference (cm), mean ± SD	82.5 ± 10.3	83.4 ± 10.8	0.003
Waist-hip ratio, mean ± SD	0.885 ± 0.79	0.891 ± 0.89	0.014
Normal/diverticulum/colitis/neuroendocrine neoplasms/hyperplastic polyps	3124 (68.0)	1241 (65.6)	0.061
Advanced colorectal neoplasia	372 (8.1)	161 (8.5)	0.582
Cancer	58 (1.3)	20 (1.1)	0.490