| PARAMETERS | EQUATIONS | SD |
| A-For males subjects having less than 18 years old: | ||
| FVC | =7.9942 − 0.12509 × H + 0.000605 × H2; | 0.393 |
| FEV | =6.6314 − 0.10261 × H + 0.000499 × H2; | 0.523 |
| B-For female subjects having less than 18 years old: | ||
| FVC | =0.169 − 0.01217 × H + 0.000189 × H2 | 0.263 |
| FEV | =0.0364 × H − 3.0378; | 0.42 |
| C-For male subjects having 18 years old and above: | ||
| FVC | =0.0576 × H − 0.026 × A − 4.34; | 0.61 |
| FEV | =0.043 × H − 0.029 × A − 2.49; | 0.51 |
| D-For females subjects having 18 years old and above: | ||
| FVC | =0.0443 × H − 0.026 × A − 2.89; | 0.43 |
| FEV | =0.0395 × H − 0.025 × A − 2.6; | 0.38 |