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Table 2 Spearman correlations between FACIT-Fatigue and various measures (Week 24)

From: Psychometric properties of FACIT-Fatigue in systemic lupus erythematosus: a pooled analysis of three phase 3 randomised, double-blind, parallel-group controlled studies (BLISS-SC, BLISS-52, BLISS-76)

Domain BLISS-SC n BLISS-52 n BLISS-76 n Pooled n
SF-36v2
 Physical component score N/A 0 0.67 798 0.69 726 0.69 1524
 Mental component score N/A 0 0.74 798 0.70 726 0.70 1524
 Physical functioning N/A 0 0.66 811 0.66 735 0.66 1546
 Role physical N/A 0 0.73 811 0.76 736 0.74 1547
 Bodily pain N/A 0 0.62 813 0.72 734 0.68 1547
 General health N/A 0 0.61 806 0.60 733 0.61 1539
 Vitality N/A 0 0.79 810 0.83 736 0.82 1546
 Social functioning N/A 0 0.72 813 0.76 736 0.74 1549
 Role emotional N/A 0 0.68 810 0.67 733 0.66 1543
 Mental health N/A 0 0.68 810 0.61 736 0.62 1546
SELENA-SLEDAI −0.17 759 − 0.04 809 − 0.16 735 − 0.13 2303
BILAG General 0.32 761 0.27 814 0.43 737 0.37 2312
BILAG Musculoskeletal 0.41 761 0.24 814 0.30 737 0.34 2312
  1. Correlations: < 0.3, weak; ≤0.3 to < 0.6, moderate-strong; ≥0.6, strong
  2. BILAG British Isles Lupus Assessment Group, FACIT Functional Assessment of Chronic Illness Therapy, N/A Not assessed, SELENA-SLEDAI Safety of Estrogens in Lupus Erythematosus National Assessment-Systemic Lupus Erythematosus Disease Activity Index, SF-36v2 Short Form-36 Health Survey Version 2