Variable | Use of essential medicines | Use of non-essential medicines | Studies |
---|---|---|---|
Co-payment | - | - | McManus et al. [165] (AU, NS, TD, R) |
Co-payment | 0 | Â | Brian and Gibbens [67] (US, ES, CD, NR) |
Co-insurance | - | - | Foxman et al. [172] (US, ES, CD, R) |
Change from | Â | Â | Â |
   co-payment to co-insurance and annual maximum | - |  | Tamblyn et al. [72] (CA, NS, TD, R) |
Prescription limit | - | Â | Fortress et al. [190] (US, NS, PD, R); Martin and McMillan [173] (US, NS, TD, R); Soumerai et al. [62] (US, NS, TD, R); Soumerai et al. [38] (US, NS, TD, R) |
Prescription limit | Â | - | Soumerai et al. [62] (US, NS, TD, R) |