. Author manuscript; available in PMC: 2019 Sep 1.

Published in final edited form as: J Clin Gastroenterol. 2018 Sep;52(8):709–714. doi: 10.1097/MCG.0000000000000849

Table 3.

Comparison of primary and secondary outcomes between pre- and post-intervention groups, controlling for ASA group.

	Pre-intervention Group (n = 524)	Post-intervention Group (n = 445)	P-value
Adequate bowel preparations	223 (42.5%)	381 (85.7%)	<0.01
Adequate bowel preparations if “fair” included as “Adequate”	407 (77.8%)	381 (85.7%)	<0.01
Repeated inpatient colonoscopies due to an inadequate preparation	22 (4.2%)	9 (2.0%)	0.06
Repeated colonoscopies (inpatient or outpatient within 3 months) due to an inadequate preparation	24 (4.6%)	9 (2.0%)	0.03
Delayed inpatient colonoscopies due to an inadequate preparation	34 (6.5%)	33 (7.4%)	0.57
Hospital days following preparation initiation to time of discharge^*	8.0 ± 11.4	6.9 ± 8.8	0.02

Statistical significance was determined via the Cochrane-Mantel-Haenszel test controlling for ASA class.

Hospital length of stay analyzed through truncated negative binomial regression controlling for ASA class, as this covariate was significantly associated with hospital days.