a trend towards significanceP = 0.08
A strong and significant correlation was identified between baseline PCS score and both unadjusted CWR ( r = 0.77, P < 0.01) and HnCWR ( r = 0.93, P < 0.01; Figure 1 ) and a trend towards significance was identified for the relationship between baseline disability and HnCWR ( r = 0.58, P = 0.08).