Table 2 The normal reference ranges of CM, IT, BS, BSOB, BS/BSOB for different CRL intervals
CRL | parameter | percentile | ||||||
|---|---|---|---|---|---|---|---|---|
(cm) | (mm) | 5 | 10 | 25 | 50 | 75 | 90 | 95 |
4.5–5.4 | CM | 0.7 | 0.8 | 1.0 | 1.1 | 1.2 | 1.4 | 1.5 |
IT | 1.4 | 1.4 | 1.5 | 1.7 | 1.8 | 1.9 | 2.1 | |
BS | 1.9 | 2.0 | 2.0 | 2.2 | 2.4 | 2.6 | 2.7 | |
BSOB | 3.0 | 3.1 | 3.3 | 3.5 | 3.7 | 3.9 | 3.9 | |
BS/BSOB | 0.53 | 0.54 | 0.57 | 0.61 | 0.69 | 0.77 | 0.81 | |
5.5–6.4 | CM | 1.1 | 1.2 | 1.3 | 1.4 | 1.6 | 1.8 | 1.9 |
IT | 1.5 | 1.6 | 1.7 | 1.8 | 1.9 | 2.0 | 2.1 | |
BS | 2.0 | 2.1 | 2.4 | 2.5 | 2.7 | 2.8 | 2.9 | |
BSOB | 3.6 | 3.7 | 3.8 | 4.0 | 4.3 | 4.5 | 4.7 | |
BS/BSOB | 0.51 | 0.53 | 0.57 | 0.62 | 0.68 | 0.72 | 0.75 | |
6.4–7.4 | CM | 1.7 | 1.7 | 1.8 | 2.0 | 2.1 | 2.3 | 2.4 |
IT | 1.7 | 1.7 | 1.8 | 1.9 | 2.0 | 2.2 | 2.2 | |
BS | 2.5 | 2.5 | 2.6 | 2.8 | 2.9 | 3.1 | 3.1 | |
BSOB | 4.1 | 4.2 | 4.4 | 4.6 | 4.9 | 5.2 | 5.3 | |
BS/BSOB | 0.52 | 0.53 | 0.57 | 0.60 | 0.64 | 0.67 | 0.70 | |
7.5–8.4 | CM | 2.0 | 2.0 | 2.1 | 2.4 | 2.6 | 2.7 | 2.8 |
IT | 1.8 | 1.8 | 2.0 | 2.1 | 2.3 | 2.4 | 2.6 | |
BS | 2.8 | 2.8 | 2.9 | 3.1 | 3.2 | 3.4 | 3.5 | |
BSOB | 4.9 | 4.9 | 5.0 | 5.3 | 5.6 | 5.8 | 6.1 | |
BS/BSOB | 0.51 | 0.52 | 0.55 | 0.58 | 0.62 | 0.64 | 0.67 | |