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Figure 3 | Respiratory Research

Figure 3

From: A mathematical reason for FEV1/FVC dependence on age

Figure 3

Predicted forced expiratory volume in one second (FEV1) versus forced vital capacity (FVC) for females. Light gray dots – the studied material. Bold curves – the mean values of FEV1 and FVC predicted for females aged 20 to 80 year (height = 160, 165, and 170 cm) with equations of various authors: ECSC [11], Lubinski and Golczewski [7], Brandli et al. [12], Langhammer et al. [13], Hankinson et al. [14], Falaschetti et al. [8]. The red parts of the curves correspond to data for females younger than 35 years (they are partly covered by the black parts).

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