Table 4.
Decomposition analysis of eating disorder-related private hospital inpatient care
| 2005 | 2020 | |||||||
|---|---|---|---|---|---|---|---|---|
| Probability of visit | Total number of visits | Probability of visit | Total number of visits | |||||
| CCI | % contr. | CCI | % contr. | CCI | % contr. | CCI | % contr. | |
| Need variables | ||||||||
| Female | −0.002 | −1.0% | −0.005 | −1.3% | 0.001 | 0.8% | 0.004 | 1.0% |
| Age (Ref: less than 15 years) | ||||||||
| 15–24 years | 0.000 | −0.2% | −0.001 | −0.2% | 0.002 | 1.1% | 0.003 | 0.8% |
| 25–34 years | 0.001 | 0.6% | 0.004 | 0.9% | 0.002 | 1.3% | 0.005 | 1.4% |
| 35–44 years | 0.000 | 0.0% | 0.000 | 0.1% | 0.000 | 0.0% | 0.000 | −0.1% |
| 45 years and above | 0.000 | 0.0% | 0.000 | 0.1% | −0.001 | −0.7% | −0.003 | −0.9% |
| Subtotal of age | 0.001 | 0.4% | 0.003 | 0.9% | 0.003 | 1.7% | 0.005 | 1.2% |
| Comorbidities (Ref: no common psychiatric or medical comorbidity) | ||||||||
| One or more common psychiatric comorbidity | 0.000 | 0.0% | 0.002 | 0.6% | 0.001 | 0.4% | 0.000 | −0.1% |
| One or more common medical comorbidity | 0.000 | −0.1% | −0.001 | −0.1% | 0.000 | 0.0% | 0.001 | 0.1% |
| One or more common psychiatric and medical comorbidity | 0.002 | 0.8% | 0.002 | 0.6% | 0.006 | 3.3% | 0.006 | 1.6% |
| Subtotal of comorbidity | 0.002 | 0.7% | 0.003 | 1.1% | 0.007 | 3.7% | 0.007 | 1.6% |
| Duration of any eating disorder (ref: less than 1 year) | ||||||||
| 1–3 years | −0.002 | −1.0% | −0.004 | −1.0% | 0.000 | 0.2% | 0.002 | 0.5% |
| Over 3 years | 0.000 | 0.1% | 0.002 | 0.6% | 0.005 | 3.1% | 0.019 | 4.9% |
| Subtotal of duration of any eating disorder | −0.002 | −0.9% | −0.002 | −0.4% | 0.005 | 3.3% | 0.021 | 5.4% |
| Total contribution of need variables | −0.001 | −0.8% | −0.001 | 0.3% | 0.016 | 9.5% | 0.037 | 9.2% |
| Non-need variables | ||||||||
| Australia born | 0.000 | 0.0% | −0.010 | −2.6% | 0.002 | 1.1% | 0.003 | 0.7% |
| Marital status (ref: never married) | ||||||||
| Married or de-facto | 0.000 | 0.2% | 0.001 | 0.2% | 0.000 | 0.0% | 0.000 | 0.1% |
| Widowed/divorced/separated | 0.001 | 0.6% | 0.003 | 0.7% | 0.002 | 0.8% | 0.003 | 0.6% |
| Subtotal of marital status | 0.001 | 0.8% | 0.004 | 0.9% | 0.002 | 0.8% | 0.003 | 0.7% |
| Remoteness (Ref: major city) | ||||||||
| Regional or remote | 0.006 | 3.1% | 0.035 | 8.7% | 0.016 | 9.2% | 0.056 | 14.4% |
| Socioeconomic status (SEIFA) (Ref: Decile 1: Most disadvantaged) | ||||||||
| Decile 2 | 0.004 | 2.1% | 0.020 | 4.8% | −0.004 | −2.1% | 0.011 | 2.8% |
| Decile 3 | 0.001 | 0.6% | 0.002 | 0.6% | −0.002 | −1.2% | 0.010 | 2.5% |
| Decile 4 | −0.001 | −0.6% | 0.001 | 0.2% | −0.006 | −3.4% | 0.011 | 2.8% |
| Decile 5 | −0.006 | −3.1% | 0.002 | 0.6% | −0.003 | −1.5% | −0.004 | −1.0% |
| Decile 6 | 0.000 | −0.1% | 0.008 | 1.9% | −0.001 | −0.5% | −0.002 | −0.5% |
| Decile 7 | 0.000 | 0.0% | 0.000 | −0.1% | 0.002 | 0.9% | −0.004 | −1.0% |
| Decile 8 | 0.018 | 8.5% | 0.019 | 4.7% | 0.010 | 5.4% | 0.022 | 5.7% |
| Decile 9 | 0.047 | 22.3% | 0.065 | 16.2% | 0.059 | 33.3% | 0.126 | 32.4% |
| Decile 10 (Least disadvantaged) | 0.140 | 67.1% | 0.257 | 63.8% | 0.086 | 48.4% | 0.121 | 31.2% |
| Subtotal of socioeconomic status | 0.203 | 96.8% | 0.374 | 92.7% | 0.141 | 79.3% | 0.291 | 74.9% |
| Total contribution of non-need variables | 0.210 | 100.7% | 0.403 | 99.7% | 0.161 | 90.4% | 0.353 | 90.7% |
| Residual | 0.000 | 0.0% | 0.001 | 0.2% | 0.000 | 0.0% | −0.002 | −0.5% |
Notes: CCI, Contribution to the concentration index; contr., contribution; CIs for conditional number of private inpatient admissions in 2005 and 2020 were not significant, and hence, no decomposition analyses were shown; residuals refer to unexplained components after accounting for the effects of the explanatory variables included in the model; contribution of need variables, non-need variables and residual factor sum to 100%. Please note that percentage may not total to 100% due to rounding in some cases.