NPPB and hydrops fetalis: A total of 14 585 (9.4%) were diagnosed with HF within 6 months of NT‐proBNP testing overall, including a higher proportion of those over 75 years compared with the younger age groups (3.8%, 9.8% and 17.5% in those under 50 years, 50–74 years and ≥75 years, respectively) and more men (11.2%) than women (8.2%).