Table 5.
Medication adherence metrics by age and sex. Results are significantly different between age groups and female versus male at P<.001 using a 2-sided t test.
| Metric | Age | Sex | |||
| <50 years (n=43,545) | ≥50 years (n=723,469) | Female (n=427,546) | Male (n=339,936) | ||
| PDCa, mean (SD) | |||||
|
|
Fixed PDC methodology | 0.629 (0.321) | 0.753 (0.271) | 0.745 (0.275) | 0.750 (0.275) |
|
|
Variable PDC methodology | 0.882 (0.154) | 0.928 (0.115) | 0.925 (0.118) | 0.927 (0.116) |
| Adherent (PDC≥0.80), n (%) | |||||
|
|
Fixed PDC methodology | 17,785 (40.84) | 414,009 (57.23) | 238,638 (55.82) | 194,503 (57.22) |
|
|
Variable PDC methodology | 34,010 (78.10) | 640,439 (88.52) | 375,430 (87.81) | 300,410 (88.37) |
aPDC: proportion of days covered.