PAVM cohort characteristics
| Male | Female | P value | |
| Age | 50 (20–81) | 53 (20–85) | 0.37 |
| MRC Dyspnoea Scale | 1 (1–5) | 2 (1–5) | 0.032 |
| NYHA class | 1 (1–4) | 1 (1–4) | 0.13 |
| VSAQ score | 10.5 (1–13) | 7 (1–12) | 0.0018 |
| SaO2 (%) | 96 (89–98) | 96 (80–96) | 0.67 |
| CaO2 (mL/L) | 189 (160–219) | 168 (87–194) | 0.0003 |
| Haemoglobin (g/L) | 152 (123–197) | 132 (73–169) | 0.0004 |
| Serum iron (μmol/L) | 14 (7–35) | 11 (1–48) | 0.020 |
| Transferrin saturation index (%) | 22.5 (6–54) | 15 (1–66) | 0.016 |
| Ferritin (μg/L) | 54 (11–306) | 26 (3–160) | 0.024 |
Selected demographics of the 71 patients with PAVMs. Data indicate median (minimum to maximum). P values were calculated by Mann-Whitney. Note that in this cohort, the MRC Dyspnoea Scale and NYHA class equivalents were assigned from the VSAQ score (see figure 3).
CaO2, arterial oxygen content; MRC, Medical Research Council; NYHA, New York Heart Association; PAVM, pulmonary arteriovenous malformation; SaO2, oxygen saturation; VSAQ, Veterans Specific Activity Questionnaire.