LARC= IUDPpr= pill patch or ring

1.00 0.80- LARC, age 221yr oldu 100 0.60- LARC, age

LARC. e 060 040 020 0 03 age yr PPR. ape 22' yr r oss Week Fi 2. Ha% I-hirded Pr%rarry, to Contracepti Meth)d A. Survival curves show the probability of not having an unintended pregnan- cy, stratified according to age group LARC methods were the most effee tive. and failure rotes did not vary accordtng to age (P=0 49)m PPR methods were less effective, and failure rates in participants younger than 21 years old were twice as great as in women 21 years of age or older (P=O.02). - Which of the following conclusions corresponds to the information presented in this graphic? a. Older age is associated with a higher risk of unintended pregnancy in both the LARC and PPR groups. b. The unadjusted hazard ratio comparing the risk of unintended pregnancies for the PPR group to the LARC group i confounded by age. c. The relationship between unintended pregnancies and PPR (versus LARC) depends on age. (i.e. age modifies the effect of PPR) reanancies is not related to contraception method.