The Change in HbA1c Associated with Initial Adherence and Subsequent Change in Adherence among Diabetes Patients Newly Initiating Metformin Therapy

Table 2

Distribution of Biologic Response Based Proportion of Days Covered (BRB-PDC) at Time 2 and Time 3 for each of the relevant study samples. Data are number (%) of patients.

	Sample 1 ( = 2,844)	Sample 2 ( = 2,416)	Sample 3 ( = 861)
BRB-PDC at Time 2
0%	204 (7.2%)	105 (4.4%)	73 (8.4%)
1–49%	216 (7.6%)	177 (7.3%)	85 (9.9%)
50–79%	534 (18.8%)	445 (18.4%)	178 (20.7%)
>80%	1,890 (66.4)	1,689 (69.9%)	525 (61.0%)
BRB-PDC at Time 3
0%	n/a	317 (13.1%)	105 (12.2%)
1–49%	n/a	145 (6.0%)	62 (7.2%)
50–79%	n/a	432 (17.9%)	184 (21.4%)
>80%	n/a	1,522 (63.0%)	510 (59.2%)