Marga Hoogendoorn

31 Table 2. Results on the validity and reliability of the scoring systems Scoring system Nr. of articles Content Validity Reliability Validity Score Explanation Score Results Score Compared with Results TISS-76 5 +/- Selection interventions without nurses, weighting interventions with nurses 15, 49 + - NS Time observations 46 TISS 49 Non-ICU system: Oulu patient classification system 50 r = 0.89 r = 0.57 PRN-system 3 + Selection interventions with nurses 16 NS - +/- Actual staff ICU 16 Non-ICU system 51 GRASP Medicus r 2 = 0.77-0.90 r 2 = 0.80-0.84 NISS 2 + Selection interventions with nurses 17 NS - +/- Non-ICU system 52 r 2 = 0.61 Classification system of Jackson Memorial Medical Centre 2 + Selection interventions with nurses 18 NS - +/- Time observations 47 r not stated NDS 1 NS - NS - +/- TISS 19 r = 0.33 Computerized Acuity System 1 + Selection interventions with nurses 20 NS - - Non-ICU system for nursing diagnosis 20 No correlation, r not stated PINI 4 - Selection interventions based on 19 other systems, without nurses 21 +/- Kappa 0.29- 0.86 21, 42-44 +/- Time measurements 42 Non-ICU systems 43 Medicus GRASP r=0.75 r=0.54-70 TOSS 1 + Selection interventions with nurses 22 NS - +/- TISS 22 r = 0.79