Propensity score matching to measure the effect of survey mode on reports of racial and ethnic discrimination in health care.

OBJECTIVE: To examine the effect of survey mode (mail vs. telephone) on the likelihood of reporting health care-related discrimination based on race, ethnicity, or nationality. METHODS: We use data from a mixed-mode, mail and telephone survey of public health care program enrollees (N=2807), including Somali, Hmong, African American, American Indian, and Latino populations. Self-reported discrimination was measured as the experience of unfair treatment by health care providers due to race, ethnicity, or nationality. We use propensity score matching to create exchangeable groups of phone and mail respondents based on the probability of completing the survey by phone. RESULTS: Overall, 33.1% of respondents reported having experienced discrimination in health care, but only 23.6% of telephone respondents reported discrimination compared with 36.8% of mail respondents. After matching phone and mail respondents based on probability of responding by telephone, all observable significant differences between respondents that were brought about by differential self-selection into mode were erased, allowing us to estimate the effect of survey mode on report of discrimination. Even after matching, the mode effect remains, where report of health care discrimination for telephone respondents would have been 12.6 percentage points higher had they responded by mail (22.6% vs. 35.2%). CONCLUSIONS: Survey mode has a significant effect on report of discrimination. Respondents may be more willing to disclose experiences of discrimination in a mail survey than to a telephone interviewer. Findings have substantial policy and clinical significance as variation in report of discrimination based on mode may lead to underestimation of the extent of the problem.

Allostatic Load Among U.S.- and Foreign-Born Whites, Blacks, and Latinx.

INTRODUCTION: The objective of this study is to examine how allostatic load, a multidimensional measure of the body's cumulative response to stressors experienced throughout the life course, has changed over time and by age among U.S.- and foreign-born Whites, Blacks, and Latinx. METHODS: Data were from 26,818 adult participants in the 2005-2018 National Health and Nutrition Examination Survey, a national repeated cross-sectional study. Allostatic load was measured based on 10 indicators of cardiovascular, metabolic, and immunologic risk. The analyses were conducted in March 2020. RESULTS: Allostatic load increased over time across all groups. The difference between the first and last survey cycle was greatest among U.S.-born Black women (from 2.74 in 2005-2006 to 3.02 in 2017-2018), U.S.-born Latino men (from 2.69 to 3.09) and foreign-born Latino men (from 2.58 to 2.87). Aging gradients in allostatic load were steepest among foreign-born Blacks of both genders and foreign-born Latina women and flattest among U.S.-born and foreign-born Whites. CONCLUSIONS: Chronic exposure to stressors leads to an erosion of health that is particularly severe among foreign-born Blacks and Latinx. Policies should seek to reduce exposure to structural and environmental risks and to ensure equitable opportunities to achieve optimal health among racial/ethnic minorities and immigrants.