Table 1.

Physician and practice characteristics associated with recommendation of liberal versus restrictive diet, split dose purgative regimen, and MiraLAX-based bowel preparations (MBBP) in preparation for screening colonoscopy among average risk adults.

	Diet							Split dose purgative regimen							MiraLAX-based purgative
	Liberal (n = 41, 15.2%)		Restrictive (n = 228, 84.8%)		p value	OR	95%CI	Split dose (n = 170, 60.0%)		No split dose (n = 113, 40.0%)		p value	OR	95%CI	MiraLAX (n = 106, 37.4%)		No MiraLAX (n = 177, 62.6%)		p value	OR	95%CI
	N	%	N	%				N	%	N	N	%			N	%	N	%
Age					0.35														0.33
≤48	18	13.2	118	86.8				75	53.2	66	57	40.4	1.00	–	141	50.5	84	59.6
>48	23	17.3	110	82.7				92	67.2	45	48	34.8	1.76	1.04–2.97	138	49.5	90	65.2
Gender					0.64														0.93
Male	36	15.4	198	84.6				146	60.6	95	90	37.3			241	85.1	151	62.7
Female	5	12.5	35	87.5				24	57.1	18	16	38.1			42	14.9	26	61.9
Race					0.07							0.21							0.75
White	34	17.5	160	82.5		1.00	–	126	62.1	77	37.9				77	37.9	126	62.1
Other	7	9.0	71	91.0		0.46	0.16–1.29	42	53.9	36	46.1				28	35.9	50	64.1
Medical school					0.63							0.066							0.63
US	30	15.1	169	84.9				129	62.6	77	37.4		1.00	–	76	36.9	130	63.1
Non-US	7	12.5	49	87.5				28	49.1	29	50.9		0.58	0.32–1.07	23	40.4	34	59.6
Specialty/Board Cert					0.31							0.16							0.96
GI	33	14.2	200	85.8				148	61.7	92	38.3				89	37.1	151	62.9
Non-GI	8	20.5	31	79.5				20	50.0	20	50.0				15	37.5	25	62.5
Region					0.004							0.17							0.67
Northeast	22	25.0	66	75.0		1.00	–	50	53.8	43	46.2				37	40.2	55	59.8
South	12	12.8	82	87.2		1.45	0.63–3.33	65	67.0	32	33.0				37	38.1	60	61.9
West†	7	7.6	85	92.4		2.98	1.16–7.67	55	59.1	38	40.9				32	34.0	62	66.0
Setting					0.62							0.90							0.003
Urban	21	13.7	132	86.3				95	59.7	64	40.3				46	29.1	112	70.9		1.00	–
Suburban	18	17.8	83	82.2				63	61.2	40	38.8				52	50.0	52	50.0		2.14	1.23–3.73
Rural	2	11.8	15	88.2				10	55.6	8	44.4				7	38.9	11	61.1		1.29	0.45–3.73
Type of practice					0.86							0.03							0.02
Private	26	15.1	146	84.9				113	63.8	64	36.2		1.00	–	77	43.5	100	56.5		1.00	–
Hospital/University	12	14.3	72	85.7				47	50.5	46	49.5		0.79	0.42–1.48	27	29.0	66	71.0		0.94	0.51–1.76
Hospital affiliation					0.71							0.034							0.70
Teaching	27	15.7	145	84.3				98	55.1	80	44.9		1.00	–	65	36.5	113	63.5
Nonteaching	14	14.0	86	86.0				70	68.0	33	32.0		0.69	0.37–1.31	40	38.8	63	61.2
Number of colonoscopies per week					0.24							0.21							0.04
≤10	5	17.9	3	82.1				17	56.7	13	43.3				6	20.7	23	79.3		0.42	0.14–1.27
11–20	8	8.8	83	91.2				51	54.3	43	45.7				29	30.8	65	69.2		0.59	0.29–1.20
21–30	17	17.9	78	82.1				57	59.4	39	40.6				42	43.7	54	56.3		0.94	0.48–1.82
>30	11	18.6	48	81.4				44	71.0	18	29.0				28	44.4	35	55.6		1.00	–

^†Including Hawaii.

CI, confidence interval; GI, gastroenterology; OR, odds ratio.