MRP categories | Total(N = 852) N(%) | Number of drugs | P | |
---|---|---|---|---|
5–9(N = 415) N(%) |  ≥ 10(N = 437) N(%) | |||
Unnecessary medication therapy | 101(11.9) | 36(8.7) | 65(14.9) | 0.005 |
Needs additional medication therapy | 22(2.6) | 11(2.7) | 11(2.5) | 0.902 |
Ineffective medication | 20(2.3) | 3(0.7) | 17(3.9) | 0.002 |
Dosage too low | 102(12.0) | 37(8.9) | 65(14.9) | 0.007 |
Adverse drug event | 33(3.9) | 13(3.1) | 20(4.6) | 0.275 |
Dosage too high | 66(7.7) | 22(5.3) | 44(10.1) | 0.009 |