Table 5.

Correlation values between the NDI and domains of the SF36 [12, 21]

NDI (r value)	Present study * (n = 160)	95% CI	Present study (n = 160)	Riddle and Stratford (n = 146)	Herman et al. (n = 80)*
SF 36 domain
Physical	−0.57	−0.67 to −0.46	−0.74	−0.53	−0.67
Role Physical	−0.53	−0.63 to −0.41
Pain	−0.74	−0.80 to −0.66
General Health	−0.47	−0.58 to −0.34
Energy	−0.63	−0.72 to −0.53	−0.68	−0.47	−0.39
Social	−0.66	−0.74 to −0.56
Role Mental	−0.45	−0.57 to −0.32
Mental Health	−0.51	−0.62 to −0.39

Individual domains and then the physical and mental components are shown

* All P < 0.001

** The present study and Riddle and Stratford used Pearson Correlation whereas Herman et al. used Spearman Rank Correlation