Table 1

Length of stay statistics for hospital discharges—all diagnoses and all injury

Test for trend
ICD-9-CMDescriptionStatistics1989199019911992199319941995199619971998z/tp-Value
Diagnosis
All ICD chaptersAll diagnoses
N423284427365424240416618439424454392464311468020477233478446
Interpolated median3.983.903.723.533.413.273.203.113.022.92−202.90<0.001
Geometric mean4.714.684.574.524.444.364.284.214.154.10−202.84<0.001
%3+ days65.6765.0063.4261.8160.4059.0058.2557.4556.4755.29−160.39<0.001
%4+ days54.4353.8052.1150.4449.0147.4646.5345.4244.2242.98−176.41<0.001
%7+ days32.1631.5730.2129.0928.0126.8725.9224.7123.9623.13−158.07<0.001
%14+ days13.9813.7913.0012.6612.2011.5510.9410.189.639.40−115.76<0.001
800–904 or 910–995All injury diagnoses
N38088394633847837886407564405244119425294302342844
Interpolated median2.842.752.612.502.352.282.182.072.011.98−56.73<0.001
Geometric mean4.974.874.754.744.464.394.284.224.184.14−57.93<0.001
%3+ days53.1952.3351.0350.0447.5946.4644.6042.6741.7641.14−52.81<0.001
%4+ days43.9443.1641.7740.9738.1637.1035.5733.8833.1832.32−51.91<0.001
%7+ days29.5228.3627.4427.1424.5723.5922.5321.6420.9020.69−44.39<0.001
%14+ days16.8715.9815.0615.2513.6212.7612.1911.7311.1711.11−35.65<0.001