GDF15 and hydrops fetalis: For 180-day HF rehospitalization (Supplementary Table S15-16), GDF-15 reduction was significantly associated with decreased hazards and incidence in both univariate (CSHR 0.20 CI 0.09–0.46; SDHR 0.21, CI 0.10–0.44) and multivariate analyses (CSHR 0.23 CI 0.10–0.53; SDHR 0.23, CI 0.11–0.47).