TABLE 4.

Comparison of the MTP^* cohort and NHANES III^† sample by propensity score group.

OUTCOME	ENTIRE SAMPLE		PROPENSITY SCORE GROUP
			1		2		3		4		5		6
	NHANES III	MTP	NHANES III	MTP	NHANES III	MTP	NHANES III	MTP	NHANES III	MTP	NHANES III	MTP	NHANES III	MTP
	(n = 7,630)	(n = 250)‡	(n = 4,092)	(n = 20)	(n = 1,847)	(n = 30)	(n = 912)	(n = 50)	(n = 532)	(n = 51)	(n = 153)	(n = 33)	(n = 94)	(n = 66)
Condition of Teeth, As Reported by Participant (%)
Very good	22	11	26	20	23	14	24	12	20	8	22	9	18	5
Good	32	24	35	30	33	17	32	28	36	25	35	27	30	26
Fair	28	31	25	25	29	31	28	24	26	29	23	33	33	36
Poor	14	22	12	15	12	24	14	20	16	16	16	21	11	23
No natural teeth	4	13	3	10	3	14	2	16	2	22	5	9	9	11
P Value	< .0001§		.348		.006§		< .001§		< .001§		.201		.038§
Mean Number of Missing Teeth, As Assessed by Physician	1.96	4.58	1.81	2	2.02	3.66	2.02	4.55	1.71	5.16	1.49	4.88	1.55	4.38
P Value	< .001§		.979		.015§		.154		.028§		< .001§		< .001§

^*MTP: Methamphetamine Treatment Project.

^†NHANES III: Third National Health and Nutrition Examination Survey.

^‡Values for some MTP propensity scores were missing, so these comparisons were made using the 250 participants for whom propensity scores were available.

^§Indicates a statistically significant difference at the α = .05 level.