Cleansing efficacy and safety of bowel preparation protocol using sodium picosulfate/magnesium citrate considering subjective experiences: An observational study

Table 5 Univariate analysis

Variables	Overall	OBPS ≤ 4, n = 42	OBPS > 4, n = 20	Statistics	P value
Age (mean ± SD)	50.20 ± 10.36	47.90 ± 8.90	55.50 ± 11.90	2.81	0.0066
Male	41 (65.63)	30 (71.40)	11 (55.00)	1.63	0.255
BMI	25.1 ± 4.0	25.4 ± 4.1	24.6 ± 3.9	-0.68	0.4963
≤ 25	31 (50.00)	19 (45.20)	12 (60.00)
> 25	31 (50.00)	23 (54.80)	8 (40.00)
Constipation	6 (9.38)	1 (2.40)	5 (25.00)	7.9301	0.0112
History of abdominal surgery	9 (14.06)	4 (9.50)	5 (25.00)	2.6151	0.133
Taking drugs	10 (15.63)	5 (11.90)	5 (25.00)	1.7175	0.269
Indications				2.348	0.141
Screening	45 (72.58)	33 (78.60)	12 (60.00)
Other	17 (27.42)	9 (21.40)	8 (40.00)
No history of past colonoscopy	40 (65.63)	29 (69.00)	11 (55.00)	1.1679	0.395
Minutes from 1st dose of Picolax
First stool	73.0 (8, 243)	86.7 (8, 243)	98.2 (15, 230)	0.7234	0.4694
Last stool	169.3 ± 96.8	175.0 ± 104.8	158.1 ± 79.4	-0.64	0.5246
Minutes from 2nd dose of Picolax
First stool	38.9 ± 28.1	37.8 ± 28.5	42.8 ± 28.5	0.65	0.5212
Last stool	139.5 ± 63.1	140.9 ± 56.0	137.9	-0.18	0.8602
Water intake (mL)	3000.0 (2250, 3800)	2989.3 (2250, 3000)	2877.5 (2250, 3800)	3.6245	0.0569
Total frequency of defecation	9.0 (5, 21)	8.5 (5, 17)	9.0 (5, 21)	0.2819	0.779
Sleep disturbances (VAS > 1)				2.824	0.7271
Yes	20	15 (35.7)	5 (25.0)
No	42	27 (64.3)	15 (75.0)
Ease of drinking				0.01	1
Easy (VAS ≥ 9)	46	31 (73.8)	15 (75.0)
Hard (VAS < 9)	16	11 (26.2)	5 (25.0)
Taste				0.2214	1
Satisfied (VAS ≥ 9)	54	36 (85.7)	18 (90.0)
Dissatisfied (VAS < 9)	8	6 (14.3)	2 (10.0)

BMI: Body mass index; OBPS: Ottawa Bowel Preparation Scale; SD: Standard deviation; VAS: Visual analogue scale/score.