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Table 4 Known-groups validity between patients receiving treatment and not receiving treatment

From: Validation of the Chinese EORTC chronic lymphocytic leukaemia module – application of classical test theory and item response theory

  Treatment (n = 228) No treatment (n = 49) Difference (95% C.I.) p-value
Mean sd Mean sd
SB (item 1–6) 31.75 17.41 20.41 14.98 11.34 (6.5 ~ 16.17) < 0.001
PC (item 7–10) 31.91 20.02 24.32 15.2 7.59 (2.53 ~ 12.64) 0.003
WF (item 11–17) 57.56 27.14 52.84 24.97 4.72 (−3.23~12.68) 0.24
  1. There are four kinds of treatment: chemotherapy, radiation therapy, immunotherapy, or surgery
  2. 95% C.I., 95% confidence interval
  3. p-value was calculated based on the robust one-way ANOVA on trimmed means suggested by Wilcox
  4. SB symptom burden, PC physical condition/fatigue, WF Worries/fears about health and functioning