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. 2022 Oct 13;60(4):2103181. doi: 10.1183/13993003.03181-2021

FIGURE 2.

FIGURE 2

Forrest plots of the identified studies in healthy subjects in the supine position for a) mean age (years), b) mean pulmonary arterial pressure (mPAP)/cardiac output (CO) slope (Wood units (WU)) and c) pulmonary arterial wedge pressure (PAWP)/CO slope (WU). Estimates were computed using the Knapp–Hartung correction due to the low number of available studies. The study of Wolsk et al. [65] assessed different age groups that are separately displayed in the Forrest plot, showing the influence of age on cardiopulmonary haemodynamic parameters during exercise. Wolsk et al. 2017­_1 provided the youngest age group (<40 years) and Wolsk et al. 2017­_3 the oldest ( >60 years) [65].