Table 2.

The validity of the Bristol Impact of Hypermobility (BIoH) questionnaire when correlated with the SF-12; total score, physical component score (PCS) and mental component score (MCS).

Descriptive statistics Median (interquartile range)				r	p value
BIoH	174.0 (55.0)	SF-12 total score	90.1 (25.6)	-0.743	0.001*
		SF-12 (PCS)	41.9 (22.5)	-0.740	0.001*
		SF-12 (MCS)	47.0 (21.9)	-0.496	0.001*

*Correlation is significant at the 0.01 level (2-tailed)

r = 0.00 to 0.20 poor, 0.21–0.40 fair, r = 0.41–0.60 good, r = 0.61 to 0.80 very good, r = 0.81 to 1.0 excellent [32].