Table 3.
Cost ratios for the comparison between different designs
| Measurement error var. | Heritability (% total var.) | CR4,2 | CR2,1 | CR2,1.2 | CR2,1.1 | CR1.2,1 | CR1.1,1 |
|---|---|---|---|---|---|---|---|
| 11 (10%) | 0.20 (18%) | 31.20 | 8.38 | 7.16 | 7.34 | 19.00 | ∞ |
| 0.60 (54%) | 26.75 | 5.67 | 5.26 | 5.22 | 7.57 | 14.00 | |
| 25 (20%) | 0.20 (16%) | 14.44 | 3.29 | 2.77 | 2.97 | 6.50 | 9.00 |
| 0.60 (48%) | 10.41 | 2.30 | 1.91 | 2.00 | 4.45 | 9.00 | |
| 67 (40%) | 0.20 (12%) | 4.55 | 0.85 | 0.53 | 0.65 | 2.75 | 5.00 |
| 0.60 (36%) | 3.33 | 0.52 | 0.36 | 0.38 | 1.07 | 2.00 | |
| 150 (60%) | 0.20 (8%) | 1.33 | 0.09 | 0 | 0 | 0.76 | 1.31 |
| 0.60 (24%) | 0.78 | 0.03 | 0 | 0 | 0.40 | 0.43 |
CRm1,m2 is defined in (5). When Cs/Cp > CRm1,m2, taking m1 measures is better than taking m2 measures per subject. Heritability is defined as (σ2mg+ σ2pg)/(σ2mg+ σ2pg + σ2e).