Table 1.

Number and percentage of studies reporting compliance data (n = 58)

	YES	NO	Not reported
	n (%)
Was the method of measuring compliance reported?	40 (69)	18 (31)	–
Was the method of measuring compliance objective?	34 (59)	6 (10)	18 (31)
Was the compliance rate of participants included in the analysis reported?	31 (53)	27 (46)	–
Did the paper state whether there was a significant difference in the number of compliers between treatment groups?	28 (48)	30 (52)	–
Were attempts made to maximize compliance?	10 (17)	0 (0)	48 (83)