Table 1.

Practice, patient and tooth characteristics at baseline (Y0) by whether any restorative treatment (Tx) was performed among the 899 teeth that were recommended for treatment at Y0.

	(N=899)		Whether Restorative Tx Was Performed
	ALL1	Column %	N	Row %2	P 3	OR 4
Type of practice					P = 0.03	categorical
Owner private practice	729	81%	591	81%
HP/PDA other PPO54	65	7%	58	89%
Other, unknown	105	12%	66	63%
Network Region					P = 0.03	categorical
Western	149	17%	131	88%
Midwest	147	16%	124	84%
Southwest	167	19%	116	69%
South Central	178	20%	137	77%
South Atlantic	129	14%	94	73%
Northeast	129	14%	113	88%
Patient’s Level of Education					P = 0.04	1.4
< Bachelor’s degree	400	45%	305	76%
Bachelor’s or higher	496	55%	407	82%
Biting pain at Y0					P = 0.008	1.7
No	592	66%	450	76%
Yes	307	34%	265	86%
Spontaneous pain at Y0					P = 0.02	1.7
No	682	76%	531	78%
Yes	217	24%	184	85%
Wear facet thru enamel at Y0					P = 0.03	0.65
No	645	72%	534	83%
Yes	254	28%	181	71%
Caries present at Y0					P < 0.001	2.4
No	644	72%	491	76%
Yes	255	28%	224	88%
Non-carious cervical lesion present at Y0					P = 0.07	0.58
No	827	92%	669	81%
Yes	72	8%	46	64%
Has a crack that connects with restoration at Y0					P = 0.03	0.62
No	191	21%	165	86%
Yes	708	79%	550	78%
Has a crack that…extends to root at Y0					P = 0.02	0.45
No	802	89%	658	82%
Yes	97	11%	57	59%
Intracoronal restoration recommended at Y0					P < 0.001	2.0
No (Crown, full or partial)	593	66%	451	76%
Yes	306	34%	264	86%
Multiple treatments recommended at Y0					P < 0.001	27.4
No	659	73%	478	73%
Yes	240	27%	237	99%

¹Column Ns not summing to 899 due to missing data.

²Percent within level of row characteristic.

³Significance of differences in proportions of column heading adjusted only for clustering of patients within practitioner.

⁴OR: Odds ratios (only for dichotomous variables)

⁵HP: Health Partners; PDA: Permanente Dental Associates; PPO: Preferred provider organization.