Average health costs, years of life lost and incremental cost-effectiveness ratio for higher and lower proportional use of agency-employed nurses, 2013–2015
| Agency nurse proportion | Total | Excluding predominantly non-Aboriginal communities | Excluding hospitalisations for renal dialysis | Potentially preventable hospitalisations | |
| n (person-months) | Higher (≥13%) | 7 04 240 | 6 36 525 | 7 04 240 | 7 04 240 |
| Lower (<13%) | 5 62 468 | 4 35 209 | 5 62 468 | 5 62 468 | |
| YLL (per 1000 person-months) | Higher (≥13%) | 14.6 | 13.7 | 14.6 | 0.0 |
| Lower (<13%) | 13.3 | 12.8 | 13.3 | 0.1 | |
| P value | <0.001 | <0.001 | <0.001 | 0.978 | |
| Average health cost ($) (per 1000 person-months) | Higher (≥13%) | $480 915 | $503 989 | $446 289 | $301 567 |
| Lower (<13%) | $470 145 | $532 494 | $435 375 | $295 207 | |
| P value | <0.001 | <0.001 | <0.001 | <0.001 | |
| ICER | $7964 | −$29 310 | $8070 | −$70 757 |
ICER, incremental cost-effectiveness ratio; YLL, year of life lost.