The delivery of evidence-based preventive care for older Americans with arthritis

Table 2 Descriptive characteristics of older Medicare enrollees with rheumatoid arthritis, psoriatic arthritis, and osteoarthritis

Variable	Rheumatoid arthritis N = 141,140	Psoriatic arthritis N = 6,300	Osteoarthritis N = 770,520
Demographics
Age
65 to 69	32.5	39.4	23.9
70 to 74	31.2	31.8	27.1
75 to 84	22.3	18.7	25.4
85+	10.4	8.3	15.0
Gender, %
Female	76.9	60.0	72.9
Male	23.1	40.0	27.1
Race, %
Asian	0.8	-	1.1
Black	6.4	-	7.7
Hispanic	1.6	-	2.0
Other	1.2	-	1.0
White	90.0	97.1	88.2
Rural/Urban, %
Urban Core	64.3	71.4	65.1
Not Urban Core	35.8	25.6	34.9
Geographic Region, %
Northeast	20.5	26.7	20.9
Midwest	26.1	21.9	24.6
West	14.9	13.3	14.8
South	38.5	38.1	39.6
Income in $, %
0 to - <30,000	20.0	13.7	22.5
30,000 to <45,000	39.4	34.0	38.3
45,000 to <60,000	22.3	22.2	21.2
60,000 to <75,000	10.5	14.6	9.7
75,000+	7.8	15.6	8.3
Comorbidities, %
Myocardial infarction	2.5	-	2.5
Heart failure	5.6	3.5	6.4
Cardiovascular disease	4.1	5.4	5.4
Dementia	0.5	-	0.8
Chronic pulmonary disease	14.1	11.8	13.4
Cancer (any)	6.7	7.6	7.6
Hypertension	37.1	42.2	49.0
Osteopenia	0.8	-	0.9
Osteoporosis	9.7	5.1	7.0
Closed hip fracture	0.8	-	0.7
Physician Specialty (≥2 visits), %
No rheumatology and no primary care	6.5	5.1	18.9
Rheumatology but no primary care	23.9	27.0	4.2
Primary care but no rheumatology	30.9	21.6	68.4
Both Rheumatology and primary care	38.7	46.4	8.5
Physician Visits, n	14.3 (0, 142)	15.2 (2, 64)	12.8 (0, 168)
Number of days of inpatient hospitalization, n	2.2 (0, 365)	1.7 (0, 66)	3.0 (0, 348)
Receipt of any Long Term Care, %	2.3	0.6	3.5

Data shown as % or as mean (range). All data were assessed in the 12-month baseline period before the start of the five-year observation period.
Totals may not sum to exactly 100% due to rounding.
Cells with a "-"were suppressed due to requirements imposed by data use agreement restrictions related to small cell sizes

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