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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: Am J Med Sci. 2015 Oct;350(4):279–285. doi: 10.1097/MAJ.0000000000000552

Table 3.

Chronic Pain Cohort: Characteristics Among Subjects With and Without Incident HRME

Characteristic No Incident HRME (n = 538,121) n (%) Incident HRME (n = 45,945) n (%) P-value
Age groups
 65–74 234,643 (43.6) 23,270 (50.7) <0.001
 75–84 250,906 (46.6) 19,211 (41.8)
 85+ 52,573 (9.8) 3,464 (7.5)
Male 527,637 (98.1) 44,474 (96.8) <0.001
Race/Ethnicity
 White 370,212 (68.8) 33,710 (73.4) <0.001
 African American 37,830 (7.0) 4,362 (9.5)
 Hispanic 17,646 (3.3) 2,332 (5.1)
 Other/Missing 112,433 (20.9) 5541 (12.1)
Under the poverty limit 349,733 (65.0) 36,617 (79.7)
Selim Physical Comorbidity Index
 0–1 50,088 (9.3) 2,751 (6.0) <0.001
 2–3 256,449 (47.7) 17,016 (37.0)
 4–5 168,587 (31.3) 16,292 (35.5)
 6+ 62,997 (11.7) 9,886 (21.5)
Selim Psychiatric Comorbidity Index
 0 454,350 (84.4) 34,405 (74.9) <0.001
 1 65,591 (12.2) 8,288 (18.0)
 2+ 18,180 (3.4) 3,252 (7.1)
Number of unique drugs
 0–5 207,216 (28.5) 8,869 (19.3) <0.001
 6–8 142,062 (26.4) 9,976 (21.7)
 9–11 94,365 (17.5) 9,754 (21.2)
 12+ 94,478 (17.6) 17,346 (37.8)
Outcomes
Death within 1 year 24,869 (4.6) 3,817 (8.3) <0.001
ED visits 88,616 (16.5) 19,473 (42.4) <0.001
ED visits related to falls/fractures 2,677 (.50) 3,344 (0.57) <0.001
Hospitalization 32,455 (6.0) 8,311 (18.1) <0.001
Hospitalization related to falls/ fractures 658 (0.1) 164 (0.4) <0.001