Table 3. Multivariate logistical regression model predicting likelihood of FTA occurrence per person (n=8,561) between 2011–2013 at community medical centre, by children and young people under 18 years (n=13,731) and adults (n=77,016).
| Group | Predictor | B | S.E. | Wald | df | p-value | OR | 95% C.I.for OR | |
|---|---|---|---|---|---|---|---|---|---|
| Lower | Upper | ||||||||
| Adults | |||||||||
| Number of Appointments | .050 | .002 | 449.255 | 1 | .000 | 1.051 | 1.046 | 1.056 | |
| Age | –.027 | .002 | 172.814 | 1 | .000* | .974 | .970 | .978 | |
| Sex | –.019 | .066 | .086 | 1 | .769 | .981 | .862 | 1.116 | |
| Aboriginal | 1.392 | .107 | 170.701 | 1 | .000* | 4.022 | 3.264 | 4.956 | |
| Female* Aboriginal | .241 | .150 | 2.590 | 1 | .108 | 1.272 | .949 | 1.705 | |
| Constant | –.508 | .090 | 31.780 | 1 | .000 | .602 | |||
| Children and young people | |||||||||
| Number of Appointments | .129 | .010 | 181.783 | 1 | .000 | 1.138 | 1.117 | 1.159 | |
| Age | .004 | .010 | .166 | 1 | .683 | 1.004 | .984 | 1.024 | |
| Sex | .054 | .144 | .143 | 1 | .705 | 1.056 | .797 | 1.399 | |
| Aboriginal | 1.071 | .145 | 54.361 | 1 | .000* | 2.917 | 2.195 | 3.878 | |
| Female* Aboriginal | –.125 | .210 | .354 | 1 | .552 | .882 | .584 | 1.333 | |
| Constant | 2.086 | .142 | 216.627 | 1 | .000 | .124 | |||
OR – odds ratio; B= logistic regression coefficient; S.E.= standard error of B; Wald = Wald test statistic; df = degrees of freedom; p = probability; * p<0.01