Table 2.

Convergent and discriminant validity

Subscale	# Items	Acceptability	Feasibility	Tolerability
Acceptability	6	0.208–0.630	-0.303–0.132	0.084–0.507
Feasibility	7	-0.375–0.202	0.040–0.576	-0.252–0.311
Tolerability	9	0.060–0.440	-0.171–0.201	0.134–0.774

Correlation coefficients on the diagonal (italicised) represent the range of correlation coefficients obtained for each item with its own subscale after removal of the overlapping item (ie, convergent validity). All other coefficients represent divergent validity. Some negative correlations were obtained due to the varying nature of items (ie, asking about self vs asking about friends/family).