highly significantp < 0.001
Comparison of survival curves using the log-rank test indicated highly significant differences, for both mothers (p < 0.001, chi square = 16.217) and fathers (p < 0.001, chi square = 17.084).
Comparison of survival curves using the log-rank test indicated highly significant differences, for both mothers (p < 0.001, chi square = 16.217) and fathers (p < 0.001, chi square = 17.084).