Table 1: Patient Characteristics by Group

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	CMT (n = 182 596)		PCO (n = 85 765)		PDT (n = 23 243)
	Mean	SD	Mean	SD	Mean	SD
Age	75.5	5.9	76.0	6.6	75.6	6.4
	n	%	n	%	n	%
Age category
66-70 y	56 301	31	20 403	24	5792	25
71-75 y	58 542	32	25 208	30	7047	30
76-80 y	37 766	21	19 531	23	5286	23
81-85 y	19 609	11	11 946	14	3130	13
86-99 y	10 378	6	8677	10	1988	9
Sex
Female	120 445	66	58 313	68	15 214	65
Male	62 151	34	27 452	32	8029	35
Race/ethnicity
Black	2016	1	4483	5	1395	6
Hispanic	3709	2	5015	6	1203	5
White	168 349	92	68 924	81	19 113	82
Other/unknown	8552	5	7343	9	1532	7
Low-income marker	8458	5	12 531	15	2433	10
CCI
00	121 250	68	52 586	61	14 264	61
1	42 522	24	22 965	27	6172	27
2	11 228	6	6961	8	1747	8
3	2747	2	2049	3	495	2
4+	1686	1	1204	1	284	1
Chronic Conditions
Depressive disorder	13 904	8	8665	10	2023	9
Fibromyalgia	4224	2	2778	3	529	2
Low back pain	113 061	62	31 174	36	7167	31
Opioid use disorder	810	0.5	1218	1	164	1
Hip osteoarthritis	2835	1.5	1874	2.2	444	2
Knee osteoarthritis	10 039	5.5	6363	7	1460	6

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CCI, Charlson Comorbidity Index;
CMT, Chiropractic Manipulative Therapy;
Low-Income Marker, Dual enrollment in Medicaid and/or Part D subsidy;
N, number;
PCO, Primary Care Only;
PDT, Prescription Drug Therapy;
SD, standard deviation.