Table 3.

Correlation of BASMI_lin with disease activity, physical function and quality of life measures^a

	Week 12, n = 309				Year 5, n = 124
Measure	n	r b	P-valuec		n	r b	P-valuec
BASDAI	308	0.32	<0.001		123	0.41	<0.001
Total back pain	308	0.25	<0.001		124	0.42	<0.001
BASFI	308	0.52	<0.001		124	0.65	<0.001
SF-36 PCS	278	−0.33	<0.001		121	−0.40	<0.001
ASQoL	282	0.30	<0.001		124	0.33	<0.001

^aAnalysis is for the any adalimumab population. ^bInterpretation of the correlation coefficients: 0.00–0.29, little or no correlation; 0.30–0.49, weak; 0.50–0.69, moderate; 0.70–0.89, strong; and 0.90–1.00, very strong. ^cSignificant P-value suggests that a non-zero correlation may be present between corresponding variables. ASQoL: AS quality of life; BASMI_lin: linear BASMI; SF-36 PCS: Short Form-36 physical component score.