167 PROMIS in VWD, IPFDs and RBDs 5 Table S18: Overview of the skewness, inter-item correlation and reliability of the SF-36v2 in adults with rare bleeding disorders. Score Correlation Reliability Instruments N N. of items Mean SD Skew Min Max α GLB SF-36v2 Physical functioning 26 10 79.2 24.6 -1.27 0.45 0.94 0.94 0.98 Role limitations due to physical health problems 26 4 98.1 9.8 -4.53 N/A N/A N/A N/A Role limitations due to emotional problems 26 3 97.4 9.1 -2.99 N/A N/A N/A N/A Vitality 26 4 64.0 18.6 -0.36 0.35 0.84 0.87 0.92 Mental health 26 5 76 10.2 -0.62 0.32 0.74 0.83 0.93 Social functioning 26 2 79.8 25.0 -0.66 0.88 - 0.84 0.89 (Bodily) pain 26 2 70.7 26.1 -0.32 0.93 - 0.96 0.96 General health 26 5 57.9 25.4 -0.01 0.45 0.85 0.87 0.93 Physical component score 26 21 47.3 9.8 -0.54 0.01 0.71 0.75 0.86 Mental component score 26 14 52.5 5.2 -0.52 0.11 0.85 0.72 0.88 Abbreviations: α, Cronbach’s alpha; GLB, greatest lower bound; Max, maximum; Min, minimum; No, number; SD, standard deviation; SF-36v2, Short Form-36 version 2.
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