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. Author manuscript; available in PMC: 2017 Dec 14.
Published in final edited form as: J Pain Symptom Manage. 2016 Dec 29;53(4):669–681.e8. doi: 10.1016/j.jpainsymman.2016.10.367

Table 4.

Correlation of Average Scores of Progressively Shorter Survey Versions to the Original Survey in English and Spanish

Overall (n= 664) English (n=431) Spanish (n=233)
Survey Average 5-point scorea mean (SD) Correlationb p-value Average 5-point scorea mean (SD) Correlationb p-value Average 5-point scorea mean (SD) Correlationb p-value
82 items 2.54 (0.94) 2.78 (0.95) 2.10 (0.76)
55 items 2.84 (0.90) 0.97 <0.001 3.08 (0.87) 0.97 <0.001 2.39 (0.77) 0.97 <0.001
34 items 3.07 (0.98) 0.94 <0.001 3.35 (0.92) 0.94 <0.001 2.54 (0.85) 0.94 <0.001
15 items 3.16 (1.02) 0.91 <0.001 3.43 (0.96) 0.90 <0.001 2.66 (0.94) 0.90 <0.001
9 items 3.11 (1.09) 0.89 <0.001 3.39 (1.05) 0.89 <0.001 2.61 (0.97) 0.87 <0.001
4 items 2.70 (1.22) 0.85 <0.001 2.96 (1.24) 0.85 <0.001 2.20 (1.02) 0.80 <0.001
a

Based on an average 5-point score. Process items scored on a 5-point Likert scale and action items scored as “yes” = 5 and “no” = 0.

b

Pearson’s correlation coefficient