Anthropometry and spirometry z scores in patients with SCA from the United Kingdom and Nigeria
| . | SCA . | Mean difference between United Kingdom and Nigeria . | ||
|---|---|---|---|---|
| United Kingdom . | Nigeria . | Mean difference . | 95% CI . | |
| No. of males (%) | 75 (54) | 154 (54) | ||
| Age, y | 11.7 (2.8) | 11.4 (3.2) | 0.3 | –0.5 to 1.1 |
| z score | ||||
| Height | 0.19 (1.25) | –1.77 (1.21) | 1.96 | 1.62 to 2.3 |
| BMI | 0.11 (1.17) | –1.38 (1.34) | 1.50 | 1.13 to 1.87 |
| FEV1 | –1.08 (1.03) | –1.38 (0.96) | 0.29 | 0.02 to 0.56 |
| FVC | –0.70 (1.01) | –1.21 (0.96) | 0.51 | 0.24 to 0.78 |
| FEV1/FVC | –0.89 (0.90) | –0.47 (0.98) | –0.41 | –0.64 to –0.17 |
| . | SCA . | Mean difference between United Kingdom and Nigeria . | ||
|---|---|---|---|---|
| United Kingdom . | Nigeria . | Mean difference . | 95% CI . | |
| No. of males (%) | 75 (54) | 154 (54) | ||
| Age, y | 11.7 (2.8) | 11.4 (3.2) | 0.3 | –0.5 to 1.1 |
| z score | ||||
| Height | 0.19 (1.25) | –1.77 (1.21) | 1.96 | 1.62 to 2.3 |
| BMI | 0.11 (1.17) | –1.38 (1.34) | 1.50 | 1.13 to 1.87 |
| FEV1 | –1.08 (1.03) | –1.38 (0.96) | 0.29 | 0.02 to 0.56 |
| FVC | –0.70 (1.01) | –1.21 (0.96) | 0.51 | 0.24 to 0.78 |
| FEV1/FVC | –0.89 (0.90) | –0.47 (0.98) | –0.41 | –0.64 to –0.17 |
Results are mean (standard deviation), unless otherwise specified.
BMI, body mass index; FEV, forced expiratory volume; FEV1, volume of air that can be forced out in 1 second after taking a deep breath (an important measure of pulmonary function); FVC, forced vital capacity.