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Table 4 Frequency, severity, minimal important difference, and responsiveness of WURSS-21 Items

From: Validation of a short form Wisconsin Upper Respiratory Symptom Survey (WURSS-21)

Symptom Item # on W-21 Item# on W-44 Frequency Severity MID MSE Responsiveness
How sick 1 1 100.0 4.13 ± 1.46 0.77 0.78 0.62
Runny nose 2 8 98.3 3.70 ± 1.77 0.56 1.48 0.33
Plugged nose 3 9 96.5 4.00 ± 1.79 0.57 1.54 0.32
Sneezing 4 10 95.7 3.34 ± 1.76 0.50 1.20 0.32
Sore throat 5 5 92.6 3.76 ± 1.85 0.49 1.00 0.35
Scratchy throat 6 6 96.1 3.82 ± 1.81 0.50 1.25 0.32
Cough 7 2 92.2 3.80 ± 1.84 0.46 1.76 0.25
Hoarseness 8 7 86.1 3.38 ± 2.01 0.41 1.29 0.26
Head congestion 9 28 93.0 4.03 ± 1.70 0.64 1.54 0.37
Chest congestion 10 29 75.7 3.76 ± 1.88 0.38 0.97 0.27
Feeling tired 11 18 99.6 4.33 ± 1.80 0.82 1.41 0.49
Think clearly 12 34 91.3 3.53 ± 1.68 0.54 1.02 0.38
Sleep well 13 36 93.9 4.17 ± 1.82 0.66 1.69 0.36
Breathe easily 14 37 96.5 3.84 ± 1.86 0.60 1.08 0.41
Walk/Climb stairs 15 38 89.6 3.75 ± 1.81 0.50 0.88 0.38
Accomplish daily activities 16 39 90.4 3.57 ± 1.74 0.57 1.08 0.39
Work outside the home 17 40 82.2 3.80 ± 1.84 0.48 1.16 0.32
Work inside the home 18 41 87.0 3.52 ± 1.81 0.51 0.80 0.40
Interact with others 19 42 86.5 3.50 ± 1.73 0.53 0.93 0.39
Live your personal life 20 43 88.3 3.58 ± 1.74 0.58 0.92 0.43
  1. The first and last items on both the WURSS-21 and WURSS-44 differ from other items in terms of purpose and recall period, hence are not included in summary scores.
  2. Frequency = Scored above zero at least once in first seven days of monitoring,
  3. Severity = Mean severity on 7-point scale averaged over first three days; Calculated only for those with symptom present all three days. To weight each person's responses equally, data were first averaged within-person-over-time, then averaged among participants
  4. Importance = Items were rated for importance on a 5-point scale at intake only, and only on the WURSS-44
  5. MID = Minimal Important Difference = Mean day-to-day change for those rating themselves as "a little better" or "somewhat better" compared to the last time they filled out the questionnaire
  6. MID and Guyatt's responsiveness index were 10.3, 0.71 for the WURSS-21 and 18.5, 0.75 for the WURSS-44, respectively
  7. MSE = Mean squared error for all people who rated themselves as "the same" for two days in a row