# Table 4 Case-mix groups and distribution in derivation and replication samples

Case mix group    Derivation Sample (n = 182)    Replication Sample (n = 135)
Distribution% (n) Mean Informal hours (CV) Formal Cost CMI (CV)* Formal and informal cost CMI (CV) Distribution% (n) Mean Informal hours (CV) Formal Cost CMI (CV) Formal and informal cost CMI (CV)
1 9.3 (17) 2.5 (0.10) 0.06 (1.08) 0.06(1.02) 15.6 (21) 3.4 (1.74) 0.21 (1.36) 0.21 (1.18)
2 9.9 (18) 7.0 (0.11) 0.14 (0.62) 0.17 (0.42) 5.9 (8) 11.7 (1.93) 0.22 (1.10) 0.27 (0.73)
3 12.1 (22) 31.4 (0.13) 0.31 (1.31) 0.51 (1.09) 13.3 (18) 33.7 (1.67) 0.27 (1.69) 0.47 (1.07)
4 6.6 (12) 7.0 (1.47) 0.15 (0.90) 0.18 (0.87) 6.7 (9) 8.6 (1.85) 0.19 (0.78) 0.22 (0.47)
5 6.6 (12) 37.8 (1.34) 0.34 (1.04) 0.56 (0.81) 5.9 (8) 18.7 (0.99) 0.36 (2.08) 0.45 (1.36)
6 6.0 (11) 12.2 (2.13) 1.16 (0.97) 1.05 (0.89) 5.2 (7) 49.0 (1.03) 0.78 (1.04) 1.03 (0.52)
7 8.8 (16) 14.3 (2.14) 0.45 (1.75) 0.47 (1.33) 7.4 (10) 23.8 (1.79) 0.61 (1.39) 0.70 (1.32)
8 13.7 (25) 57.0 (1.20) 1.17 (0.94) 1.42 (0.54) 8.9 (12) 36.9 (1.84) 2.77 (1.72) 2.68 (1.52)
9 26.9 (49) 19.6 (1.97) 2.29 (0.33) 2.07 (0.25) 31.1 (42) 8.8 (3.09) 1.78 (0.32) 1.62 (0.24)
All 100.0 (182) 22.9 (1.84) 1.00 (1.12) 1.00 (0.94) 100.0 (135) 17.7 (2.18) 1.00 (1.69) 1.00 (1.46)
1. *CMI = CM index; CV = coefficient of variation.