Table 4 Test statistics and P values for (before – after) score differences, and sample medians of patients
Test | Tenderness (L) | Tenderness (R) | Headache Pain |
|---|---|---|---|
Sign test | 10 (P < 0.01) | 9.0 (P < 0.01) | 10 (P < 0.01) |
Sign rank test | 105 (P < 0.01) | 103.5 (P < 0.01) | 105 (P < 0.01) |
Median (before) | 7 | 8 | 6 |
Median (after) | 2 | 2 | 2 |
N | 20 | 20 | 20 |