ObjectivesTo evaluate if a values clarification workshop conducted at Catholic hospital training programs influenced obstetrics and gynecology residents' abortion attitudes. Study designBetween 2018 and 2019, we provided a values clarification workshop focused on abortion care to 47 obstetrics and gynecology residents at five Catholic programs that do not provide abortion training. Participants received a pre-survey eliciting participant characteristics, and training experiences. On pre- and post-surveys, we asked participants to respond to abortion scenarios using a five-point Likert scales (1 = strongly disagree, 2 = somewhat disagree 3 = neither agree nor disagree, 4 = somewhat agree, 5 = strongly agree). We calculated descriptive frequencies, report the proportions agreeing with the statements (Likert ≥4) before and after the workshop, and compared median Likert responses using Wilcoxon matched pair test. ResultsForty-one participants (87%) completed both surveys. Twelve (29%) reported Catholic religion, six (15%) reported their personal reproductive care views were in line with their institution, and five (12%) selected their program based on its religious affiliation. Three (9%) had experience with first-trimester abortion for nonmedical reasons, and 20 (49%) planned to provide such care after graduation. Both before and after the workshop, all participants could think of a justification why a patient with an undesired pregnancy would choose abortion. After the workshop, more residents were able to think of a justifiable reason for the following abortion-related scenarios: (1) patients declining post-abortal contraception (51% vs. 78%, p < 0.001), (2) patients presenting for subsequent abortion (93% vs 95%, p = 0.01), and (3) patients presenting for second-trimester abortion (93% vs. 100%, p = 0.001). Many participants increased their Likert score when asked about acceptability of patients declining post-abortal contraception (n = 24, 59%), patients seeking a subsequent abortion (n = 15, 37%), and patients obtaining a second trimester abortion contraception (n = 11, 27%). Emotional and professional reactions to these scenarios were unchanged. After the workshop, residents were more likely to consider either financial inability (73% vs. 83%, p < 0.01) or disruption to career or education (71% vs 80%, p < 0.01) as morally acceptable reasons for requesting an abortion. For abortion for a patient who is financially unable to support their child, 12 (29%) increased their Likert score, 1 (2%) had a lower score and the remaining 28 (68%) had no change. For abortion for a patient whose career or education would be disrupted 13 (32%) increased their Likert score, one (2%) had a lower score and the remaining 27 (66%) had no change. ConclusionOur values clarification workshop resulted in more residents at Catholic training programs endorsing accepting attitudes toward abortion patient scenarios. Values clarification exercises can be a useful tool for residents to discuss abortion care, especially when training is insufficient. ImplicationsMost obstetrics and gynecology residents at Catholic hospitals experience limited training in abortion care. A values clarification workshop conducted at such programs may result in increasing resident acceptance of abortion-related patient care scenarios and may help reduce abortion stigma.