Regional variation in anti-depressant dispensings in New Zealand: 1993-1997.
OBJECTIVE
To examine regional differences in the prescribing of anti-depressants in New Zealand from 1993 to 1997, and to examine the composition and dynamics of these differences.


METHODS
Data on every subsidised dispensing of anti-depressant drugs 1993 to 1997 were obtained from PHARMAC and analysed using SAS. Each dispensing was allocated to a regional council area on the basis of the location of the dispensing pharmacy.


RESULTS
Prescribing of anti-depressants increased with time in all regions. However, there was substantial regional variation in prescribing rates per-capita, the highest being 2.28 to 2.49 times the lowest in every year. Regions also varied substantially in the mix of newer and older drugs used, although newer drugs became increasingly important in every region.


CONCLUSIONS
Regional differences in anti-depressant prescribing are large. Further research with different data sources is required to explore the reasons for this variation.
Roberts
E
E
Health Services Research Centre, Institute for Policy Studies, Victoria University of Wellington. eroberts@hist.umn.edu
Norris
P
P
D000928:Antidepressive Agents / Q000191:economics / Q000627:therapeutic use*; D003866:Depressive Disorder / Q000188:drug therapy* / Q000191:economics / Q000453:epidemiology; D004363:Drug Utilization / Q000191:economics / Q000639:trends; D006801:Humans; D009313:National Health Programs / Q000191:economics; D009520:New Zealand / Q000453:epidemiology
D000928:Antidepressive Agents