Table 6.

Linear regression analyses.

Variable	Effect on JAMA				Effect on CPSS
	Estimate	Lower 95%	Upper 95%	p	Estimate	Lower 95%	Upper 95%	p
Views (×10,000)	0.02	0.01	0.04	0.002*	0.03	0.01	0.06	0.006*
Length (min)	0.02	−0.03	0.08	0.515	0.09	−0.001	0.17	0.052
Source
Physician versus academic	−0.81	−2.16	0.54	0.227	−1.10	−3.41	1.20	0.330
Nonphysician versus academic	−1.06	−2.07	−0.04	0.042*	−1.25	−2.97	0.48	0.147
Medical source versus academic	−0.19	−1.18	0.80	0.688	−0.01	−1.70	1.67	0.990
Content
Pathology/Pathophysiology versus advertisement	−0.54	−1.66	0.58	0.324	1.19	−0.71	3.10	0.206
Operative/Nonoperative management versus advertisement	−0.58	−1.79	0.63	0.328	0.56	−1.51	2.62	0.580
Types versus advertisement	0.02	−0.03	0.08	0.515	0.09	−0.001	0.17	0.052

JAMA: Journal of American Medical Association; CPSS: cerebral palsy-specific score.

^*p < 0.05.