Medications of patients with apparent treatment-resistant hypertension (n = 646)
| Mean number of hypertensive medications (SD) | 3.7 (0.7) |
| On three hypertensive medications only, n (%) | 282 (43.7) |
| Prescribed one or more combined medication, n (%) | 368 (56.9) |
| Adequate WHO-DDD requirements for each hypertensive medication, n (%) | 123 (19.0) |
| At least half recommended dosing for all medications (not diuretics), n (%) | 439 (67.9) |
| Nine monthly PCRS prescriptions printed in the past 12 months, n (%) | 516 (79.9) |
PCRS = primary care reimbursement service. SD = standard deviation. WHO-DDD = World Health Organization-defined daily dosing.