Table 4 BPI Internal consistency within items (3 factors)
Pain severity Items (α = 0.89) | Cronbach’s Alpha if Item Deleted | Activity interference Items (α = 0.84) | Cronbach’s Alpha if Item Deleted | Affective Interference Items (α = 0.86) | Cronbach’s Alpha if Item Deleted |
|---|---|---|---|---|---|
Worst Pain | 0.84 | General Activity | 0.72 | Mood | 0.82 |
Least Pain | 0.86 | Walking Ability | 0.83 | Relationship with others | 0.81 |
Average Pain | 0.85 | Normal Work | 0.78 | Sleep | 0.87 |
Pain Right Now | 0.88 | – | – | Enjoyment Of Life | 0.79 |