Table 3.
| a Unadjusted Total Cost Estimates by APACHE III Quartile | |||
| Pre-period | Post-period | ||
| All admissions | Mean (SD) | Mean (SD) | p-value |
| APACHE III Q1 | $15,819 (26,656) | $14,632 (24,632) | 0.550 |
| APACHE III Q2 | $29,732 (40,719) | $26,857 (40,486) | 0.086 |
| APACHE III Q3 | $33,105 (43,209) | $32,131 (35,663) | 0.688 |
| APACHE III Q4 | $50,033 (70,924) | $41,053 (47,431) | 0.026 |
| Total | $32,834 (50,372) | $28,473 (39,078) | 0.004 |
| Day admissions | Mean (SD) | Mean (SD) | p-value |
| APACHE III Q1 | $19,350 (27,136) | $16,311 (17,633) | 0.880 |
| APACHE III Q2 | $32,845 (45,203) | $29,218 (46,381) | 0.141 |
| APACHE III Q3 | $37,425 (50,471) | $34,838 (38,882) | 0.512 |
| APACHE III Q4 | $48,707 (59,631) | $42,717 (47,281) | 0.255 |
| Total | $35,231 (48,769) | $31,210 (40,930) | 0.221 |
| Night Admissions | Mean (SD) | Mean (SD) | p-value |
| APACHE III Q1 | $12,252 (25,742) | $13,087 (30,097) | 0.550 |
| APACHE III Q2 | $25,125 (32,561) | $24,234 (32,609) | 0.518 |
| APACHE III Q3 | $27,423 (30,394) | $28,949 (31,244) | 0.927 |
| APACHE III Q4 | $51,461 (81,467) | $38,780 (47,652) | 0.032 |
| Total | $29,935 (52,129) | $25,384 (36,652) | 0.007 |
| b Unadjusted ICU Length of Stay by APACHE III Quartile | |||
| Pre-period | Post-period | ||
| Day admissions | Mean (SD) | Mean (SD) | p-value |
| APACHE III Q1 | 1.64 (2.01) | 1.54 (1.43) | 0.853 |
| APACHE III Q2 | 2.69 (3.51) | 2.22 (3.17) | 0.119 |
| APACHE III Q3 | 3.18 (3.98) | 2.93 (3.23) | 0.897 |
| APACHE III Q4 | 4.73 (5.13) | 4.24 (4.58) | 0.171 |
| Total | 3.11 (4.02) | 2.78 (3.49) | 0.087 |
| Night admissions | Mean (SD) | Mean (SD) | p-value |
| APACHE III Q1 | 1.40 (1.07) | 1.34 (1.54) | 0.086 |
| APACHE III Q2 | 1.93 (2.12) | 2.22 (3.70) | 0.246 |
| APACHE III Q3 | 2.87 (4.65) | 2.48 (3.25) | 0.058 |
| APACHE III Q4 | 4.77 (5.22) | 3.50 (4.34) | 0.002 |
| Total | 2.83 (3.99) | 2.31 (3.38) | <0.001 |
| c Unadjusted Non-ICU Length of Stay by APACHE III Quartile | |||
| Pre-period | Post-period | ||
| Day admissions | Mean (SD) | Mean (SD) | p-value |
| APACHE III Q1 | 3.64 (6.29) | 3.31 (4.58) | 0.515 |
| APACHE III Q2 | 6.37 (10.38) | 6.21 (9.22) | 0.397 |
| APACHE III Q3 | 7.11 (11.87) | 7.15 (9.27) | 0.250 |
| APACHE III Q4 | 7.20 (11.98) | 6.57 (10.80) | 0.670 |
| Total | 6.21 (10.62) | 5.87 (8.98) | 0.556 |
| Night admissions | Mean (SD) | Mean (SD) | p-value |
| APACHE III Q1 | 2.15 (5.81) | 2.54 (9.26) | 0.783 |
| APACHE III Q2 | 5.41 (7.78) | 5.39 (10.17) | 0.423 |
| APACHE III Q3 | 5.11 (5.00) | 6.51 (9.24) | 0.288 |
| APACHE III Q4 | 8.29 (18.84) | 7.06 (14.41) | 0.994 |
| Total | 5.34 (11.55) | 5.22 (10.59) | 0.807 |
SD – standard deviation