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Table 1 Patient numbers and disease severity before and after Introduction of MPU.

From: Triage after drug overdose: effect of the Introduction of a medical psychiatry unit on the allocation of ICU beds

  Before MPU (18 months) Since MPU (51 months) Difference 95% CI Pvalue
Admissions per month 4.9 3.5 -1.4 -2.7 to -0.1 0.04
APACHE II score 8.4 12.5 +4.0 +1.8 to +6.2 0.0004
APACHE III score 30.9 40.3 + 9.4 +2.6 to +16.2 0.0069
Length of stay 0.8 1.3 + 0.5 -0.0 to +1.0 0.05