Figure 4
From: A Cohort study evaluation of maternal PCB exposure related to time to pregnancy in daughters
The cumulative probability of pregnancy over cycle months in the four cases defined by the two PCB scores (i.e., PCB+, PCB-) cut at their medians to form the (High, Low), (High, High), (Low, Low) and (Low, High) groupings where PCB + is the score associated with a positive hazard slope (shorter TTP) and PCB- is the score associated with a negative hazard slope (longer TTP).