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Table 2 Product-moment correlations among items comprising the ISS

From: Unpacking the impact of chronic pain as measured by the impact stratification score

  Chores Stairs Walk15 Errands Interfere
daily
Interfere
home
Interfere
social
Interfere
chores
1. Chores -        
2. Stairs 0.59 -       
3. Walk15 0.54 0.65 -      
4. Errands 0.60 0.64 0.73 -     
5. Interfere daily 0.51 0.45 0.45 0.55 -    
6. Interfere home 0.58 0.49 0.48 0.56 0.85 -   
7. Interfere social 0.48 0.47 0.49 0.57 0.74 0.75 -  
8. Interfere chores 0.62 0.52 0.50 0.57 0.74 0.85 0.75 -
9. Pain intensity 0.43 0.39 0.36 0.43 0.67 0.66 0.56 0.62
  1. Average inter-item correlation = 0.58