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Table 2 Examining visit- and lab-defined retention in care thresholds in SLE cases with and without nephritis (n = 397)

From: Investigating lupus retention in care to inform interventions for disparities reduction: an observational cohort study

 

All SLE

Lupus nephritis

p

n = 397

n = 145

Definition

Interval

n

%

n

%

Visit definitions

 Rh visits

≥ 1/year

331

83

120

83

0.802

 *Rh visits

≥ 2/year

238

60

96

66

0.054

 Rh visits

≥ 4/year

79

20

46

32

< 0.001

Lab definitions

 C3/C4

≥ 1/year

184

46

78

54

0.024

 *C3/C4

≥ 2/year

106

27

49

34

0.015

 C3/C4

≥ 4/year

30

8

20

14

< 0.001

 CBC

≥ 1/year

213

54

90

62

0.011

 CBC

≥ 2/year

159

40

72

50

0.001

 CBC

≥ 4/year

93

23

52

36

0.003

 Creatinine

≥ 1/year

211

53

89

61

0.013

 Creatinine

≥ 2/year

163

41

74

51

0.002

 Creatinine

≥ 4/year

92

23

49

34

< 0.001

 dsDNA

≥ 1/year

149

38

67

46

0.007

 dsDNA

≥ 2/year

77

19

39

27

0.004

 dsDNA

≥ 4/year

18

5

12

8

0.007

  1. Abbreviations: Rh rheumatology MD, DO, NP, PA, or fellow; C3/C4 complement component 3 or 4 lab tests which were each independently assessed yielding identical results that are shown together; CBC complete blood counts; dsDNA double-stranded DNA antibody test
  2. *Final models used two visits and at least two labs per year consistent with WHO/CDC HIV definitions and ACR SLE guidelines