• David Hyung Won Oh, Carol Conell, Liisa Lyon, Nirmala D Ramalingam, Loveleena Virk, and Ruben Gonzalez.
• Department of Internal Medicine, Kaiser Permanente Oakland Medical Center, 275 W. McArthur Blvd, Oakland, CA, 94611, USA. david.h.oh@kp.org.
• J Gen Intern Med. 2023 Apr 1; 38 (5): 113711421137-1142.

BackgroundLittle is known about possible differences in advance directive completion (ADC) based on ethnicity and language preference among Chinese Americans on a regional level.ObjectiveTo understand the association of ethnicity and language preference with ADC among Chinese Americans.DesignRetrospective cohort analysis with direct standardization.ParticipantsA total of 31,498 Chinese and 502,991 non-Hispanic White members enrolled in Kaiser Permanente Northern California during the entire study period between 2013 and 2017 who were 55 or older as of January 1, 2018.Main MeasuresWe compared the proportion of ADC among non-Hispanic White and Chinese patients, and also analyzed the rates according to language preference within the Chinese population. We calculated ADC rates with direct standardization using covariates previously found in literature to be significant predictors of ADC such as age and utilization.Key ResultsAmong Chinese members, 60% preferred English, 16% preferred another language without needing an interpreter, and 23% needed an interpreter. After standardizing for age and utilization, non-Hispanic Whites were more than twice as likely to have ADC as Chinese members (20.6% (95% confidence interval (CI): 20.5-20.7%) vs. 10.0% (95% CI: 9.6-10.3%), respectively). Among Chinese members, there was an inverse association between preference for a language other than English and ADC (13.3% (95% CI: 12.8-13.8%) if preferring English, 6.1% (95% CI: 5.4-6.7%) if preferring non-English language but not needing an interpreter, and 5.1% (95% CI: 4.6-5.6%) if preferring non-English language and needing an interpreter).ConclusionsChinese members are less likely to have ADC relative to non-Hispanic White members, and those preferring a language other than English are most affected. Further studies can assess reasons for lower ADC among Chinese members, differences in other Asian American populations, and interventions to reduce differences among Chinese members especially among those preferring a language other than English.© 2022. The Author(s), under exclusive licence to Society of General Internal Medicine.

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