t-Tests of differences in means between GPs in estimation sample and AMPCo population of GPs
| GPs in estimation sample, % (N=448) | GP population (AMPCo 2020), % (N approx. 34 500) | P value | |
| Female | 55.1 | 47.0 | <0.001 |
| Age (years) | |||
| <35 | 13.8 | 14.1 | 0.87 |
| 35–39 | 6.7 | 9.9 | 0.03 |
| 40–44 | 11.6 | 12.9 | 0.41 |
| 45–49 | 9.6 | 11.8 | 0.15 |
| 50–54 | 11.6 | 11.8 | 0.88 |
| 55–59 | 16.7 | 12.6 | 0.009 |
| 60–64 | 13.4 | 11.0 | 0.11 |
| 65–69 | 9.8 | 8.2 | 0.22 |
| 70 or higher | 6.7 | 7.6 | 0.46 |
| Overseas trained | 21.7 | 44.0 | <0.001 |
| Rurality (modified Monash model) | |||
| MM1 | 65.4 | 72.4 | <0.001 |
| MM2 | 10.0 | 9.5 | 0.71 |
| MM3 | 8.7 | 7.3 | 0.24 |
| MM4-7 | 15.8 | 10.8 | <0.001 |
| SES quartile | |||
| 1 | 15.6 | 17.6 | 0.27 |
| 2 | 25.4 | 24.4 | 0.60 |
| 3 | 26.1 | 25.1 | 0.62 |
| 4 | 32.8 | 32.9 | 0.96 |
| State | |||
| Australian Capital Territory | 1.3 | 1.7 | 0.57 |
| New South Wales | 26.1 | 30.0 | 0.07 |
| Northern Territory | 3.1 | 0.9 | <0.001 |
| Queensland | 20.3 | 20.4 | 0.97 |
| South Australia | 10.5 | 6.9 | 0.003 |
| Tasmania | 2.9 | 2.3 | 0.38 |
| Victoria | 26.8 | 24.4 | 0.25 |
| Western Australia | 8.9 | 10.0 | 0.43 |
Values are bolded to denote statistical significance (p<0.10). Rurality is defined using the modified Monash model: MM1, MM2, MM3, MM4 and MM5–7 are grouped with MM4 for the analysis. SES is defined using the ABS SEIFA Index of Disadvantage of the postcode of the GP’s practice, and are in quartiles. Most disadvantaged is the bottom quartile (0%–25%) of disadvantage.
ABS, Australian Bureau of Statistics; GP, general practitioner; MM1, major cities; MM2, areas within 20 km of town with 50 000 population; MM3, areas within 15 km of town with 15 000–50 000 population; MM4, areas within 10 km of town with 5000–15 000 population; MM5–7, all other remote and rural areas; SEIFA, Socio-Economic Indexes for Areas; SES, socioeconomic status.