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Table 3 FACIT-fatigue scale acceptability and internal consistency reliability data at Baseline and Week 3

From: Qualitative and quantitative validation of the FACIT-fatigue scale in iron deficiency anemia

FACIT-fatigue Item Baseline (n = 792) Week 3 (n = 738)
Score Range (0 –4) Mean / Median (SD) Floor /Ceiling % α Item - total Correlation Score Range (0 –4) Mean / Median (SD) Floor /Ceiling % α Item - total Correlation
I feel fatigue 0 – 4 2.71 / 3.0 (1.15) 4.3 / 29.1 0.92 0.73 0 – 4 1.61 / 1.0 (1.12) 14.9 / 5.2 0.94 0.81
I feel weak all over 0 – 4 2.26 / 2.0 (1.25) 11.4 / 17.3 0.92 0.77 0 – 4 1.23 / 1.0 (1.14) 31.1 / 3.7 0.94 0.82
I feel listless (washed out) 0 – 4 2.31 / 2.0 (1.29) 12.4 / 19.9 0.92 0.79 0 – 4 1.21 / 1.0 (1.18) 33.3 / 4.2 0.94 0.86
I feel tired 0 – 4 2.85 / 3.0 (1.12) 3.3 / 33.7 0.92 0.75 0 – 4 1.71 / 2.0 (1.15) 12.4 / 7.8 0.94 0.81
I have trouble starting things 0 – 4 2.31 / 2.0 (1.27) 11.5 / 20.2 0.92 0.81 0 – 4 1.28 / 1.0 (1.15) 29.0 / 3.3 0.94 0.85
I have trouble finishing things 0 – 4 2.30 / 2.0 (1.28) 12.3 / 19.7 0.92 0.82 0 – 4 1.34 / 1.0 (1.19) 28.5 / 3.7 0.94 0.84
I have energy 0 – 4 1.41 / 1.0 (0.98) 17.2 / 2.7 0.93 0.48 0 – 4 1.96 / 2.0 (1.03) 6.2 / 5.9 0.94 0.53
I am able to do my usual activities 0 – 4 2.14 / 2.0 (1.02) 5.0 / 9.4 0.93 0.51 0 – 4 2.51 / 3.0 (1.02) 2.2 / 16.3 0.95 0.50
I need to sleep during the day 0 – 4 2.10 / 2.0 13.9 / 17.9 0.93 0.57 0 – 4 1.32 / 1.0 (1.19) 27.4 / 5.2 0.94 0.61
I am too tired to eat 0 – 4 1.06 / 1.0 (1.31) 42.2 / 2.7 0.93 0.51 0 – 4 0.57 / 0.0 (0.91) 59.7 / 0.7 0.94 0.56
I need help doing my usual activities 0 – 4 1.14 / 1.0 (1.14) 39.2 / 3.7 0.93 0.58 0 – 4 0.79 / 0.0 (1.02) 48.9 / 1.6 0.94 0.63
I am frustrated 0 – 4 2.29 / 2.0 (1.17) 16.2 / 29.1 0.92 0.77 0 – 4 1.32 / 1.0 (1.32) 33.4 / 7.9 0.94 0.81
I have to limit my social activity because I am tired 0 – 4 2.02 / 2.0 (1.45) 16.7 / 17.0 0.92 0.78 0 – 4 1.18 / 1.0 (1.13) 31.9 / 3.6 0.94 0.82
  1. Score: 0 = ‘Not at all’, 1 = ‘A little bit’, 2 = ‘Somewhat’, 3 = ‘Quite a bit’, 4 = ‘Very much’; Floor = % responding ‘0’; Ceiling = % responding ‘4’; α = Cronbach’s alpha with the item removed