Does an Immigrant Health Advantage Exist Among US Whites? Evidence from a Nationally-Representative Examination of Mental and Physical Well-Being

This study examines whether an immigrant health advantage exists among US Whites, a group often used as a reference category in research on racial and ethnic health disparities. Using recent data from the National Health Interview Survey (2019–2022), I disaggregate non-Hispanic White adults (n = 41,752) by nativity status and use logistic regression models to assess differences in six measures of mental and physical health. The analysis includes self-reported conditions (depression, anxiety, fair/poor self-rated health) and diagnosed conditions that require interaction with the healthcare system (hypertension, diabetes, and chronic obstructive pulmonary disease, COPD). Foreign-born Whites have a significantly lower prevalence of each health outcome relative to US-born Whites. The immigrant health advantage remains significant for depression, anxiety, fair/poor health (i.e., self-reported conditions) and diagnosed hypertension, after adjusting for sociodemographic and healthcare characteristics. In contrast, the inclusion of these explanatory factors reduces the nativity gap in diagnosed diabetes and COPD to non-significance. Overall, the results indicate important variation in health among Whites that is missed in studies that focus on US-born Whites, alone. Scholars must continue to monitor the health of White immigrants, who are projected to grow to 20% of the US immigrant population in the years to come. Supplementary Information The online version contains supplementary material available at 10.1007/s10903-024-01607-4.


Introduction
The health and well-being of immigrants is a topic of growing public health concern.In 2022, immigrants made up 13.9% (46.2 million) of the US population, up from 7.9% in 1990 and more than double in absolute size (19.8 million) [1,2].Immigrants are also diversifying the composition of US racial and ethnic populations, which has implications for population health and the healthcare system [3,4].To date, the majority of evidence on immigrant health has derived from research on the largest immigrant group, Hispanics (42%), and to a lesser extent, on Asian (27%) and Black standards for racial and ethnic categories1 in 1977, western European Whites comprised over 70% of the total US population and 60% of the foreign-born White population [18][19][20].Today, those numbers have dropped to roughly one-third each, while Middle Eastern and eastern European immigrants-who are also classified as White-have grown to comprise over one-half (53%) of the foreign-born White population (author's calculations from US Census data, see Fig. 1

online supplement).
The majority of immigrants from the Middle East and eastern Europe have arrived in the US since 1990, after the Iran-Iraq War (1980-89), fall of the Former Soviet Union (1991), and beginning of the first Gulf War (1991) [20].They are linguistically, phenotypically, and culturally more diverse than their western European predecessors, and many have migrated under challenging circumstances due to political and civil unrest in their countries of origin [21][22][23].Their contexts of migration have led to lower levels of health selection relative to immigrants arriving from more economically and politically stable regions [23][24][25].Once in the US, these newer immigrants are incorporated into a racial stratification system that classifies them as "White," even if they do not identify or pass as White [26,27].As a result, health disparities within these populations may be overlooked when aggregated into the broad White category.
Studies that disaggregate White ethnic subgroups, such as Arab Americans, have indeed found higher rates of diabetes [28,29], heart disease [30], disability [31], cognitive limitations [32], psychological distress [11], and poorer self-rated health [33] than US-born Whites, even after accounting for compositional differences in socio-demographic characteristics (i.e., factors that might account for health disparities).Immigrants from the Former Soviet Union, who are also classified as White, likewise report higher rates of hypertension [34], disability [21,35], and poorer self-rated health [10,23] when compared to US-born Whites.Together, these studies suggest that the healthy immigrant effect found for other racial/ethnic groups may be weaker among Whites, at least for some White subgroups.
While informative, research on specific ethnic subgroups paints a partial picture of White immigrant health.Studies that compare all foreign-born Whites to US-born Whites are limited, and even fewer have examined multiple mental and physical health outcomes in the same analytic framework.Thus, the extent to which US-and foreign-born Whites differ across a range of outcomes is unknown.Less is also known about compositional variation among White immigrants on factors related to health, such as poverty and access to healthcare.Evaluating the compositional characteristics of Whites could provide a more complete understanding of the mechanisms driving observed health disparities.The current study addresses these questions and contributes to a nascent literature on White immigrant health.Using the most recently available data from the National Health and Interview Survey (2019-2022), I disaggregate Whites by nativity status and assess differences in six measures of mental and physical health.I center the analysis on three interrelated research questions: RQ1) To what extent is there a nativity gap in health among Whites (i.e., do the foreign-born.experience a health advantage over the US-born)?;Fig. 1 Odds ratios of selfreported health conditions by nativity status with 95% confidence intervals Note: Odds ratios derived from logistic regression models in depressed or anxious/worried/nervous on a daily, weekly, or monthly basis (reference = never or a few times a year), and self-rated health identified those who reported fair or poor health (reference = excellent, very good, or good).The diagnosed health conditions are diabetes, hypertension (or high blood pressure), and chronic obstructive pulmonary disease (COPD).Each outcome is associated with several leading causes of death (e.g., heart attack, stroke) [36] and requires access to healthcare to receive a diagnoses [37,38].
Responses were coded to identify respondents who had been diagnosed with each condition (reference = not diagnosed).
The key independent variable is nativity (reference = USborn).I also include several sets of covariates that might account for observed heterogeneity in health [10].Socioeconomic characteristics are captured with measures for educational attainment (reference = less than high school); employment status (reference = not currently working/not in the labor force); and poverty status (reference = 5 times or more above the poverty threshold).Healthcare access includes health insurance coverage (reference = no coverage); having a usual place of care (reference = no); and having seen a doctor or other healthcare professional in the past 12 months (reference = no).Demographic and health behavior characteristics are age and age squared (continuous in years); gender; marital status; presence of children in the home; US citizenship status; region of US residence; body mass index (BMI); and smoking status.I conducted several sensitivity analyses to ensure that measurement decisions did not affect the primary results (available on request).

Analytic Strategy
Table 1 provides descriptive statistics on the key variables of interest (Table S1, online supplement, contains all variables in the analyses).I use Pearson chi-square (χ2) and Wald tests with Rao and Scott's second-order correction to RQ2) Does the nativity gap vary across measures of mental and physical health?; RQ3) Do compositional differences in sociodemographic and healthcare factors.account for observed disparities in health between US-and foreign-born Whites?

Data and Measures
This study uses merged data from the 2019 to 2022 National Health Interview Survey (NHIS). 2 The data were obtained through the University of Minnesota's Integrated Public Use Microdata Series (IPUMS) and include pooled samples from the 2019 to 2022 files with integrated sampling weights.The analytic sample includes US-born (n = 39,468) and foreign-born (n = 2,284) non-Hispanic White adults ages 25 to 64. 3 The data are publicly available and contain no identifying information on respondents, thus deemed exempt from Institutional Review Board (IRB) approval.
The dependent variables include three self-reported health conditions (where respondents evaluated their own health status) and three diagnosed health conditions (where respondents had to interact with the healthcare system to receive a diagnosis).The self-reported conditions are depression, anxiety, and self-rated health.Depression and anxiety were coded to capture respondents who reported feeling analyses were conducted using R version 4.2.2 and the survey package [39] to incorporate NHIS sample weights.

Results
As seen in Table 1, foreign-born respondents report fewer self-reported and diagnosed health conditions than do USborn Whites, which provides initial evidence of a nativity gap in health among Whites (RQ1).Further, the prevalence of disease and size of the nativity gap varies across the six outcomes (RQ2).For self-reported conditions, one in five identify significant differences between US-and foreignborn Whites across health conditions (RQ1, RQ2) and sociodemographic and healthcare factors (RQ3).I then use a series of logistic regression models to estimate health outcomes, with and without adjustment for covariates, using the Bayesian Information Criteria (BIC) to identify the best model fit.Table 2 presents the odds ratios predicting selfreported health conditions in Panel A and diagnosed health conditions in Panel B (Tables S2 and S3 include the full set of covariate estimates).Figures 1 and 2 plot the odds ratios from Panels A and B to ease interpretation of findings.All (0.66-0.91)Odds ratios with 95% confidence intervals in parentheses (CI) from logistic regression models.All estimates are weighted.Model 1 is the baseline model that includes nativity status, and Model 2 adjusts for education, poverty, employment, health insurance coverage, usual place for healthcare, seen a provider in past year, age, gender, US citizenship, marital status, presence of children at home, length at residence, and region of US residence.
Table S2 and Table S3 (supplements) contain coefficients for all variables in the models.** p < 0.01, * p < 0.05, ϯ p < 0.10 Fig. 2 Odds ratios of diagnosed health conditions among whites by nativity status with 95% confidence intervals, National Health Interview Survey 2019-2022 Note: Odds ratios derived from logistic regression models in Table 2, Panel B. The unadjusted models include nativity status (Model 1) and the adjusted models include all covariates (Model 2) US-born Whites after the inclusion of control variables.The biggest change is for self-rated health, where the inclusion of covariates reduces the foreign-born advantage by nearly one-half.The overall pattern in Fig. 1 indicates that compositional heterogeneity in sociodemographic and healthcare factors, alone, do not fully account for the nativity gap in self-reported outcomes (RQ3).
For diagnosed medical conditions (Panel B), the immigrant advantage for diabetes and COPD seen in Table 1 disappears and is no longer statistically different from that of US-born Whites in the fully adjusted model (OR = 1.07;CI = 0.63, 1.41 for diabetes; OR = 0.88; CI = 0.60, 1.29 for lung disease).Hypertension is the only diagnosed condition where foreign-born Whites have a lower odds of diagnoses (OR = 0.70; CI = 0.62, 0.79) that remains robust after adjustment for covariates (OR = 0.78; CI = 0.66, 0.91).Figure 2 simplifies interpretation of the findings by graphing the results for each of the diagnosed conditions.As seen in the figure, the foreign-born advantage evidenced for selfreported health conditions (Fig. 1) is considerably smaller and not statistically different from US-born Whites, especially in the case of diabetes and COPD.Hypertension stands out in that the odds of reporting a diagnosis remains significantly lower for foreign-born Whites in the fully adjusted analysis.

Discussion
Inequality research often uses US-born, non-Hispanic Whites as the reference group to measure US health disparities, with less attention paid to diversity among Whites, particularly White immigrants.White immigrants make up a sizable portion (17%) of the US foreign-born population, yet are surprisingly absent in the overwhelming majority of research on US racial/ethnic inequality [4], immigrant health [24], and even in studies that examine Whiteness and White racial identity [40].The current study addresses these oversights by disaggregating US Whites by nativity status and examining differences in six measures of health that tap into dimensions of mental and physical well-being.I used one of the only nationally-representative datasets available (NHIS) that contains detailed information on nativity and health status, with large enough sample sizes of White immigrants for analyses.
The results found an overall pattern of better health among White immigrants compared to US-born Whites, which is similar to findings of an 'immigrant health advantage' for other racial/ethnic groups but counter to studies that find little to no health advantage for specific White subgroups, such as Arab Americans [33].One plausible explanation is that the foreign-born White category contains other (19.8%)US-born Whites report experiencing depression and one in four (25%) report experiencing anxiety, compared to 14.2% and 19.5% of the foreign-born, respectively.One in ten (11.3%)US-born Whites also rate their health as "fair or poor" compared to 7.7% of foreign-born Whites.The prevalence for diagnosed conditions is highest for hypertension, with one-fourth of US-born and onefifth of foreign-born Whites reporting being diagnosed with high blood pressure.The prevalence of diabetes and chronic obstructive pulmonary disease (COPD) are lower, as are the nativity gaps: 6.3% of US-born and 5.1% of foreign-born Whites report being diagnosed with diabetes and 4.2% and 2.5% with COPD.Though smaller, the nativity gaps for these conditions are significant.
Turning to explanatory factors, foreign-born Whites have relatively high levels of educational attainment and are bifurcated in terms of poverty status, with higher concentrations in the lowest and highest levels of poverty.There is no significant variation by nativity status for health insurance coverage, having a usual place of care, or having seen a provider in the past year.US-born Whites are more likely to be overweight or obese and be current smokers, while foreign-born Whites are more likely to be currently married, have a minor in the home, and live in the Northeast and West regions.The age and gender composition of USand foreign-born Whites are similar, with a mean age of approximately 45 years and an equal distribution of males and females.
Table 2 presents odds ratios from logistic regression models assessing differences in self-reported (Panel A) and diagnosed conditions (Panel B).Panel A shows that the immigrant health advantage seen in Table 1 remains significant in the multivariable context and is largely impervious to adjustment for sociodemographic and healthcare factors.For example, foreign-born Whites have 37% lower odds of depression in the baseline model (OR = 0.67; CI = 0.59, 0.77) that decreases to 27% but remains significantly lower than US-born Whites in the fully adjusted model (OR = 0.73; CI = 0.61, 0.86).Changes in the nativity gap for anxiety are even smaller, decreasing from 27% lower odds in Model 1 to 23% in Model 2 (OR = 0.73; CI = 0.64, 0.83 and OR = 0.77, CI = 0.66, 0.90).
Changes in the odds of fair/poor self-rated health are most affected by the inclusion of covariates; in the unadjusted Model 1, foreign-born Whites have a 35% lower odds of reporting fair/poor health (OR = 0.65, CI = 0.55, 0.79) that drops in size and significance after adjustment for covariates (OR = 0.81, CI = 0.64-1.01).Figure 1 eases interpretation by graphing the unadjusted and adjusted odds ratios for each condition.As seen in the figure, foreign-born Whites have lower unadjusted odds of depression, anxiety, and fair/ poor self-rated health that remain significantly lower than the redesign also affects studies that used restricted data to examine specific country-of-origin groups.Second, the current study focused on non-Hispanic Whites and excluded a smaller but growing number of Whites who identify as Hispanic.The decision was purposeful and aimed at disrupting the long-standing practice of using non-Hispanic Whites as a benchmark for measuring US racial/ethnic health disparities [41].Moving forward, research will need to consider the role of Hispanic ethnicity in analyses of White health, especially as overall growth in the US White population is projected to result, in part, from increases in Whites of Hispanic ethnicity [15].

Conclusions
White immigrants are projected to grow to 20% of the US foreign-born population and 7% of the White population by 2060 [15], thus understanding diversity among Whites is crucial for knowledge on racial, ethnic, and immigrant health disparities.This study focuses on this question and makes several contributions to existing research.By focusing on non-Hispanic Whites, I extend recent work that underscores ethnic heterogeneity within US racial groups, most of which has concentrated on racial and ethnic minorities [4].I also challenge the practice of using non-Hispanic Whites as a reference group to measure racial gaps in health.The practice emerged in a time of greater ethnic homogeneity among Whites (i.e., western European) and should be used with caution moving forward, especially when examining trends over time.Studies that fail to consider compositional changes among Whites could yield biased or misleading estimates of progress (or the lack thereof) toward racial/ethnic equity.Policy decisions that are based on racial comparisons are likewise implicated in findings from this study.Future research will need to continue monitoring the composition of US Whites to better specify the conditions that contribute to within-and between-group racial health disparities.

Supplementary Information
The online version contains supplementary material available at https://doi.org/10.1007/s10903-024-01607-4.large ethnic groups, namely Europeans, which contributes to overall averages in White immigrant health.These averages, in turn, can mask within-group heterogeneity among White immigrants.Indeed, prior studies that disaggregate White immigrants by region of birth lend support to this possibility [20,21].Unfortunately, the NHIS dropped the region of birth question in 2018, which I discuss in more detail below.

Acknowledgements
Beyond the general pattern of better health, there was diversity in the size of the health gap between US-and foreign-born Whites depending on the health measure in question.The efficacy of sociodemographic and healthcare factors in explaining health gaps also varied by health condition.For self-reported conditions-depression, anxiety, and fair/poor self-rated health-foreign-born Whites had a health advantage over US-born Whites that remained significant after adjustment for covariates.In fact, the odds of reporting better health were remarkably similar in the baseline and fully adjusted models, suggesting that compositional differences in sociodemographic and healthcare characteristics were not responsible for health gaps between foreign-and US-born Whites, at least not for these health conditions.
Findings for diagnosed health conditions, which required interaction with the healthcare system, were slightly more complex.First, the prevalence of diabetes and chronic obstructive pulmonary disease (COPD) were relatively low when compared with hypertension, likely due to the age composition of the sample that excluded later stages of the life course when disease prevalence is highest.Second, the inclusion of covariates reduced the nativity gap to non-significance for diabetes and COPD but did little to alter the gap in diagnosed hypertension.Symptoms associated with diabetes and COPD are more noticeable than those for hypertension, and thus may motivate health-seeking behaviors for treatment that reduce between-group disparities.Findings for hypertension were similar to those for depression, anxiety, and fair/poor self-rated health (i.e., self-reported health conditions) in that standard explanations for health disparities did not account for the better health of foreignborn Whites.These results suggest that other mechanisms not observed in the current study may be contributing to health disparities in conditions that are harder to detect (e.g., hypertension, depression).
This study is not without limitations.First, I was unable to disaggregate White immigrants by region or country of birth due to the removal of region of birth in the 2019 NHIS survey redesign.I attempted to account for this shortcoming by using duration of US residence and immigrant arrival cohort as proxy measures for region of birth but found that sample sizes were too small for meaningful analyses (e.g., 71% of foreign-born whites had resided in the US for 15 years or more, analyses available on request).It is worth noting that This study was supported by a Pilot Grant from the Center for Population Health and Aging (CPHA) and support from the Centers on the Demography and Economics of Aging Program award number P30 AG034424 by the Division of Behavioral and Social Research at the National Institute on Aging for research.The author would like to thank Turgut Keskintürk, PhD student in the Department of Sociology at Duke University, for assistance with the analysis and results.

Table 1 (
Estimates are weighted, sample sizes are unweighted p-values are calculated by Wald Tests for continuous variables and Chi-Squared Tests with Rao and Scott's Second-Order Correction for categorical variables continued)

Table 2
Multivariable results for self-reported and diagnosed health conditions among whites by nativity status, ages 25-64: National Health Interview Survey, United States, 2019-2022