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Table 5 Internal inconsistency of Fact-G, FLIC and EORTC QLQ-C30 by presentation order(a)

From: Order effects: a randomised study of three major cancer-specific quality of life instruments

Order

FACT-G

FLIC

EORTC QLQ-C30

A

0.909

0.925

0.896

B

0.911

0.934

0.866

Difference in alpha

-0.002

-0.009

0.030

(90% CI)

(-0.022 to 0.099)

(-0.024 to 0.006)

(-0.024 to 0.082)

  1. (a) Order A and order B mean, respectively, the HRQoL instrument was placed first and second in the questionnaire