Table 2 Number of missing values in FACT-G, FLIC and EORTC QLQ-C30 by presentation order(a)(b)
From: Order effects: a randomised study of three major cancer-specific quality of life instruments
FACT-G | FLIC | EORTC QLQ-C30 | ||||
|---|---|---|---|---|---|---|
Number of missing values | Order A (N = 455) | Order B (N = 401) | Order A (N = 389) | Order B (N = 448) | Order A (N = 433) | Order B (N = 428) |
0 | 207 | 195 | 303 | 345 | 368 | 380 |
1 | 157 | 139 | 47 | 52 | 46 | 40 |
2 | 48 | 36 | 16 | 27 | 12 | 6 |
3 | 20 | 9 | 15 | 16 | 2 | 0 |
4 | 9 | 8 | 4 | 3 | 3 | 2 |
5 | 5 | 4 | 0 | 4 | 1 | 0 |
6 | 4 | 3 | 1 | 1 | 0 | 0 |
7 | 2 | 2 | 1 | 0 | 0 | 0 |
8 | 3 | 2 | 1 | 0 | 0 | 0 |
≥9 | 0 | 3 | 1 | 0 | 1 | 0 |
Mean | 0.96 | 0.93 | 0.44 | 0.43 | 0.25 | 0.14 |
p-value (Fisher's exact test) | 0.825 | 0.457 | 0.308 | |||