We found a statistically significant effect after four months in the bodily pain domain of SF36 , with an estimated mean difference ( EMD ) of 15.3 ( 95 % CI :4 to 26.6 , p = 0.01 ) and a trend in favour of the intervention for role physical functioning ( EMD 12.04 , 95 % CI : -1 to 25.1 , p = 0.07 ) and physical component summary ( EMD 3.76 , 95 % CI : -0.1 to 7.6 , p = 0.06 ) .