Table 1.

Patients Demographics

	HPS (n = 612)	non-HPS (n = 4,524)	P value	OR (95% CI)
Sex
Male	179 (29.2%)	1097 (24.2%)	0.007	1.291 (1.071, 1.557)
Female	432 (70.6%)	3406 (75.3%)	0.012	0.788 (0.654, 0.949)
Not recorded	1 (0.2%)	21 (0.5%)	0.285	0.351 (0.047, 2.614)
Age (years)
Mean	52.1	50.8
Median	53	51
Range	14–86	13–91

HPS, Hartmann's pouch stone; OR, odds ration; CI, confidence interval.