Table 2.

Cross-Method Agreement of Self-Reported Adherence With Electronic Monitoring Over Time (n = 180)

Oral Hypoglycemic Agent	Electronic Monitoring Adherence	Self-Reported Adherence	Adherence Agreement
			Kappa Coefficient
	n (%)	n (%)	Kappa	P
Baseline	77 (42.8%)	146 (81.1%)	0.133	.012
6 weeks	112 (62.2%)	137 (76.1%)	0.147	.038
12 weeks	118 (65.6%)	131 (72.8%)	0.210	.004
Antidepressants
Baseline	69 (38.3%)	133 (73.9%)	0.180	.002
6 weeks	104 (57.8%)	136 (75.6%)	0.179	.009
12 weeks	105 (58.3%)	127 (70.6%)	0.380	<.001

Adherence was operationalized as ≥80% adherence. n = number of participants who were adherent by method of adherence.