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Table 2 Characterization of prevalent SLE patients and their healthcare utilization across 4 US databases, 2016

From: Update on prevalence of diagnosed systemic lupus erythematosus (SLE) by major health insurance types in the US in 2016

 

CCAE

MDCR

OPTUM

MDCD

Total N

28,846

4281

23,877

15,096

Women, n (%)

26,476 (91.8)

3759 (87.8)

21,568 (90.3)

13,979 (92.6)

Mean age (SD), years

47 (12)

72 (7)

56 (15)

45 (15)

Number of visits, median (interquartile range)

 For any healthcare encounter

17 (10–30)

25 (15–41)

20 (11–35)

25 (13–49)

 With an SLE diagnosis

4 (2–7)

3 (2–5)

4 (2–7)

4 (2–8)

Number of patients with ≥ 1 hospitalization, n (%)

4374 (15.2)

1185 (27.7)

4510 (18.9)

5044 (33.4)

 Median (interquartile range) length of hospital-stay, days

3 (2–6)

4 (2–8)

4 (2–6)

4 (2–6)

Co-morbiditiesa, n (%)

 Renal diseases

5018 (17.4)

1177 (27.5)

6089 (25.5)

4328 (28.7)

  Renal dialysis/failure

2429 (8.4)

902 (21.1)

3970 (16.6)

2781 (18.4)

 Cardiovascular diseases

  Hypertension

10,191 (35.3)

2999 (70.1)

11,457 (48.0)

5218 (34.6)

  Ischemic heart disease

1031 (3.6)

545 (12.7)

2186 (9.2)

1433 (9.5)

  Heart failure

903 (3.1)

638 (14.9)

2275 (9.5)

2047 (13.6)

  Rheumatic heart disease

483 (1.7)

236 (5.5)

799 (3.4)

537 (3.6)

 Cerebral vascular diseases

1052 (3.7)

484 (11.3)

1747 (7.3)

1409 (9.3)

 Neuropsychiatric conditions

  Headache (recorded on claims)

4043 (14.0)

512 (12.0)

3804 (15.9)

3897 (25.8)

  Psychosis

444 (1.5)

272 (6.4)

990 (4.2)

1004 (6.7)

  Epilepsy/seizure

1050 (3.6)

144 (3.4)

1336 (5.6)

1800 (11.9)

  Depression

4112 (14.3)

698 (16.3)

4782 (20.0)

3284 (21.8)

 Cutaneous manifestations

  Cutaneous lupus

4452 (15.4)

683 (16.0)

4133 (17.3)

3136 (20.8)

  Dermatosis and dermatitis

3977 (13.8)

683 (16.0)

3412 (14.3)

2184 (14.5)

 Infections

8778 (30.4)

1450 (33.9)

7955 (33.3)

6405 (42.4)

  Hospitalized infections

1543 (5.4)

472 (11.0)

1847 (7.7)

2168 (14.4)

 Musculoskeletal comorbidities

  Inflammatory Polyarthropathies

6711 (23.3)

1238 (28.9)

7403 (31.0)

3688 (24.4)

  Spondylopathies

3050 (10.6)

874 (20.4)

3999 (16.8)

2337 (15.5)

  Osteoarthritis

7257 (25.2)

2251 (52.6)

9360 (39.2)

5145 (34.1)

  Osteoporosis

2351 (8.2)

1056 (24.7)

4051 (17.0)

1257 (8.3)

Medicationb use (any), n (%)

 Anti-malarials

18,129 (62.8)

2275 (53.1)

12,411 (52.0)

5324 (35.3)

 Systemic corticosteroids

18,518 (64.2)

2768 (64.7)

14,619 (61.2)

9255 (61.3)

 Non-biologic disease modifying drugs

5906 (20.5)

660 (15.4)

3904 (16.4)

2423 (16.1)

 Biologics

1286 (4.5)

139 (3.2)

818 (3.4)

480 (3.2)

 Any of the above

25,037 (86.8)

3620 (84.6)

19,268 (80.7)

10,746 (71.2)

  1. Physician specialty is incompletely captured or unspecified in insurance claims databases, especially MDCD
  2. aBased on diagnosis codes, except for depression which includes anti-depressant prescriptions (codes provided in Additional file 1)
  3. bAntimalarials included artemether, lumefantrine, atovaquone, proguanil, chloroquine, halofantrine, hydroxychloroquine, mefloquine, primaquine, pyrimethamine, quinacrine, quinine, sulfadoxine, pyrimethamine, chloroquine; non-biologic disease modifying drugs included azathioprine, chlorambucil, cyclophosphamide, cyclosporine, methotrexate, mycophenolate mofetil, mycophenolic acid; Biologics included abatacept, rituximab, tocilizumab, adalimumab, etanercept, infliximab, golimumab, certolizumab pegol, ustekinumab, secukinumab, ixekizumab, vedolizumab, belimumab