[Effective costs of intensive care: TISS and TISS-28 for the evaluation of an intensive care unit].

In 1996, Miranda published the TISS-28, a simplified version of the well-known Therapeutic Intervention Scoring System (TISS) for the evaluation of intensive care. A prospective observational study in 939 patients compared both scores, and the TISS-28 was found to show less interobserver variation. A cost analysis based on 1995 data revealed a value of 68.70 DM per TISS-28 point, which can be used to calculate the average costs for groups of patients, e.g., 1410 DM for 1 day postoperative surveillance in the ICU.