Sampling scheme | Subsample size | Â | Biomarker(s) measured | Â |
---|---|---|---|---|
 |  | Homocysteine | TS enzyme | Both |
Random | 80 | 1.92 (0.21) | - | 2.68 (0.46) |
 |  | - | 2.71 (0.43) | -0.04 (0.20) |
 | 200 | 1.82 (0.15) | - | 2.28 (0.21) |
 |  | - | 3.26 (0.54) | -0.04 (0.14) |
Stratified by G, E, and Y | 8 × 10 = 80 | 1.77 (0.25) | - | 2.62 (0.94) |
 |  | - | 2.47 (0.64) | -0.05 (0.28) |
 | 8 × 25 = 200 | 1.82 (0.16) | - | 2.03 (0.20) |
 |  | - | 2.93 (0.39) |  |
 |  |  |  | -0.14 (0.14) |