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. Author manuscript; available in PMC: 2022 Jun 1.
Published in final edited form as: Arthritis Rheumatol. 2021 Apr 23;73(6):991–996. doi: 10.1002/art.41632

Table 1:

Estimated Number of Persons with Systemic Lupus Erythematosus Living in the United States in 2018

FEMALE
Race/Ethnicity
(Number of sites
in analysis)
SLE Prevalence a
per 100,000 (95% CI)
Population
Denominator
Estimated # SLE Cases
in United States (95% CI)
Race
Black (4) 230.9 (178.2, 299.2) 24,880,722 57,450 (44,337, 74,443)
White (4) 84.7 (68.4, 104.8) 130,137,989 110,227 (89,014, 136,437)
Asian/PI (3) 84.4 (48.3, 147.4) 12,544,896 10,588 (6,059, 18,491)
AI/AN (1) 270.6 (237.5, 307.0) 2,238,966 6,059 (5,318, 6,874)
Total b 128.7 (113.3, 146.2) 169,802,573 184,323 (144,729, 236,245)
Ethnicity
Hispanic c (3) 120.7 (84.0, 173.4) 30,689,083 37,042 (25,779, 53,215)
MALE
Prevalence a
per 100,000 (95% CI)
Population
Denominator
Estimated # SLE Cases
in United States (95% CI)
Race
Black (4) 26.7 (19.6, 36.4) 22,961,129 6,131 (4,500, 8,358)
White (4) 8.9 (8.0, 10.1) 127,942,583 11,387 (10,235, 12,922)
Asian/PI (3) 11.2 (5.7, 21.9) 11,660,533 1,306 (665, 2,554)
AI/AN (1) 53.8 (36.2, 77.1) 2,134,870 1,149 (773, 1,646)
Total b 14.6 (12.2, 17.5) 164,699,115 19,972 (16,173, 25,480)
Ethnicity
Hispanic c (3) 18.0 (15.6, 20.8) 31,281,605 5,631 (4,880, 6,507)

Systemic lupus erythematosus cases were defined according to the 1997 revised American College of Rheumatology criteria.

a

Estimates for Blacks and whites are based on pooled estimates from the four state-based registries; Asian/Pacific Islanders (Asian/PI) and Hispanics are based on pooled estimates from Michigan, California and New York; American Indian/Alaska Native (AI/AN) estimates are based on the Indian Health Service Registry.

b

The pooled ‘total’ prevalence estimate includes Black, white and Asian/Pacific Islanders (Asian/PI). Since the American Indian/Alaska Native (AI/AN) prevalence was based on one registry and was significantly higher, it was not included in the pooled prevalence per 100,000.

c

Hispanic ethnicity is not mutually exclusive from the race categories, i.e., all Hispanic persons are included in one of the race categories. Thus, the pooled estimates do not incorporate the Hispanic rates since that would lead to duplicate counting. Estimates for Hispanics are based on pooled estimates from Michigan, California and New York.