Social Determinants of Hookah Smoking in the United States

Shervin Assari1*, Hamid Chalian2, Mohsen Bazargan1,3

1Department of Family Medicine, Charles R Drew University of Medicine and Science, Los Angeles, CA

2Department of Radiology, Department of Radiology, Duke University Medical Center, Durham, USA

3Department of Family Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA


Background: Educational attainment and income are two socioeconomic status indicators with strong protective effects against cigarette smoking. Marginalization-related Diminished Returns, however, refer to less than expected protective effects of socioeconomic status indicators for the members of the racial and ethnic minority groups, particularly Blacks and Hispanics, compared to non-Hispanic Whites.

Aim: Borrowing data from a nationally representative study in the US, this study tested whether racial and ethnic differences exist in the effects of educational attainment and poverty status on cigarette smoking of American adults.

Methods: This cross-sectional study entered 28,329 adult participants of the Population Assessment of Tobacco and Health (PATH; 2013). Both educational attainment and poverty status were the independent variables. The dependent variable was current hookah smoking. Age, gender, and region were the covariates. Race and ethnicity were the effect modifiers (moderators).

Results: Overall, individuals with higher educational attainment were more likely to smoke a hookah. Individuals who lived out of poverty, however, had lower odds of current hookah smoking. Race and ethnicity both showed statistical interactions with both socioeconomic indicators suggesting that Blacks and Hispanics with high educational attainment and those who live out of poverty have disproportionately high odds of hookah smoking, compared to non-Hispanic Whites with high socioeconomic status.

Conclusion: In the United States, middle-class racial and ethnic minority people remain at higher risk of smoking hookah. As a result, we should expect a high tobacco burden in middle-class Black and Hispanic adults. We suggest that policymakers should not take an over-simplistic way and reduce the problem of race/ethnic inequalities in tobacco use to gaps in socioeconomic status between groups. Marginalization-related diminished returns generate tobacco disparities in higher socioeconomic status levels. Middle-class racial and ethnic minority people need extra support to stay healthy.


Despite the recent decline in the prevalence of tobacco use in the United States, cigarette smoking remains one of the top preventable causes of morbidity and mortality in this country1-3. Each year, about 480,000 Americans die from illnesses that are due to tobacco use. In addition, more than 16 million Americans suffer from diseases that are caused by smoking4. As a result, tobacco costs the United States more than $300 billion each year, which is composed of $170 and $156 billion for direct and indirect costs, respectively5.

The burden of tobacco use, however, is not randomly distributed in the United States6-10. Despite the enormous progress that has been achieved in reducing the overall tobacco-related morbidity and mortality, cigarette smoking has transformed from a health challenge that impacts mainstream populations to a public health challenge that is highly concentrated in the marginalized populations defined by socioeconomic status, race, ethnicity, and sexual orientation11. Such social inequalities diminish the achievements of the United States regarding tobacco control11.

Racial and ethnic minorities6-10 and low socioeconomic status individuals12-14 bear the vast majority of tobacco burden in the US. Some evidence suggests that the socioeconomic status disparities in tobacco use have increased14-16. From 1966 to 2015, cigarette smoking declined by 83% in American adults with a college degree. At the same time, the decline was only 40% for Americans who did not have a high school diploma11. A large proportion of tobacco disparities may not be due to choices of the individuals but large scale upstream societal processes that place marginalized groups at higher risk of exposure to tobacco. For example, racial, ethnic, and low socioeconomic status individuals are the target of predatory tobacco marketing17-19. In a recent study, non-Hispanic Whites with high education remembered the fewest number of tobacco ads20. Black and Hispanic people with high education, however, reported a high number of tobacco ads20. This finding suggested that tobacco marketing may have a role in explaining why middle-class Hispanic and Black individuals remain at risk of tobacco use20. Low socioeconomic status individuals, as well as racial and ethnic minorities, are more frequently exposed to a wide range of environmental tobacco risk factors such as advertisements, retail displays, coupons, and discounts21. The result is their increasing vulnerability of racial/ethnic and low socioeconomic status individuals22, which is characterized by a more rapid transition from initiation to undesired outcomes, in part due to low access to cessation programs8,23,24.

Marginalization – related Diminished Returns (MDRs)25,26 refer to “weaker than expected” protective effects of socioeconomic indicators, particularly educational attainment on a wide range of health outcomes including but not limited to tobacco use for minority compared to the majority populations27-29. According to the MDRs, at least some of the racial/ethnic disparities in health are due to diminishing returns of educational attainment and other socioeconomic resources on securing tangible outcomes for the members of socially marginalized compared to socially privileged groups. This model proposes that: (a) racial/ethnic inequalities in tobacco burden are not all due to socioeconomic gaps, but at least some of it is due to smaller effects of socioeconomic indicators for minority populations, and (b) the racial and ethnic gap in tobacco use widens as socioeconomic status increases. This model emphasizes a need to study racial/ethnic tobacco disparities across all socioeconomic status levels and suggests that the solution to tobacco disparities is beyond equalizing socioeconomic status27-29. There is a need to study if diminished returns are causing racial and ethnic disparities for various tobacco products in the US27-29. Previously, such diminished returns were described for tobacco use, tobacco dependence30, smoking29, vaping31, and even alcohol use28,32.

While minorities’ diminished returns of education on tobacco, e-cig, tobacco dependence, and even alcohol use, and alcohol binge drinking are shown, these patterns are not shown for other types of substances. While similar to any other country, there are many types of tobacco available in America, these substances and methods of use may have different predictors. They may also be differently influenced by social determinants of health, such as socioeconomic status. Thus, there is a need to test if similar diminished returns also apply to other forms of use. From various tobacco products, hookah has received one of the least amounts of attention by researchers. Thus, there is a need for additional studies on hookah smoking, a method of use with very limited existing knowledge.

This study tested race/ethnic variation in the effects of two socioeconomic status indicators, namely educational attainment and poverty status, on hookah smoking in a nationally representative sample of American adults. We expected smaller protective effects of educational attainment and living out of poverty on hookah use for Black and Hispanic than Non-Hispanic White Americans. As marginalization-related diminished returns are not because of groups’ or individuals’ characteristics but the marginalization of racial and minority populations25,26, we expected similar diminished returns for Blacks and Hispanics.

We conducted a cross-sectional study. The source of data for the current secondary analysis came from wave 1 of the Population Assessment of Tobacco and Health (PATH) -Adults. PATH is funded by the National Institute for Health and the Food and Drug Administration and generates valid nationally representative prevalence estimates on tobacco use in the US population. Data collection was conducted in 2013-2014.

We used Wave1 of the PATH data for this analysis. Data were downloaded from the University of Michigan Inter-university Consortium for Political and Social Research. We merged data sets DS0001 and DS1001 for the purpose of this study, using the identifiers in the Master Linkage file. The former is a Master Linkage file and includes 53,178 youth and adults. The later includes 32,320 adults (Wave 1 Adult Questionnaire). This study only includes 28,329 adults. All the data for this proposal is at the individual level.

The PATH sample is composed of non-institutionalized, civilian, American adults. The PATH study used a four-stage stratified and clustered probability sample that introduces the survey weights and nested data.

The current analysis was limited to all adults aged 18 or more who had data on our variables (see below for a list). While the original sample size was 32,320 adults, this study includes only 25,654 adults. Individuals who were not included in the current analysis were either from other races and ethnic groups or did not have a valid measure on their study variables.

Variables in this analysis included race, ethnicity, socioeconomic status indicators (poverty status and educational attainment), hookah use, and demographic indicators (age and gender), all measured at the individual level.

Race and ethnicity were self-identified in this study. These variables were treated as two dichotomous variables: Race (Non-Hispanic Blacks versus Non-Hispanic Whites) and Ethnicity (Hispanics versus Non-Hispanics).

Educational attainment was a six-level variable as below: 1) Less than High School, 2) General Educational Development, 3) High school graduate, 4) Some college (no degree) or associate degree, 5) Bachelor's degree, and 6) Advanced degree. Poverty status was dichotomous variable 0) below 100% federal poverty line, 1) above 100% federal poverty line.

The outcome was the current smoking of hookah, which was self-reported. Current hookah smoking was defined as hookah smoked daily or sometimes in the past 30 days.

Age was a continuous measure, ranging from 1 to 7 as below: 1) 18 to 24 years old, 2) 25 to 34 years old, 3) 35 to 44 years old, 4) 45 to 54 years old, 5) 55 to 64 years old, 6) 65 to 74 years old, and 7) 75 years old or older. Gender was a dichotomous variable with females as the reference group.

To analyze the PATH-Adults data, we used SPSS 23.0 (IBM Corporation, Armonk, NY, USA). To apply the weights, which was necessary to produce results that were generalizable to the US general population, we re-estimated the variance and standard errors using Taylor series linearization. Thus, our analyses addressed the survey design due to sample weight, PSU, clustering, and stratification. For data analysis, first, we tested whether there is any collinearity between race, ethnicity, educational attainment, and poverty status. We did not find any evidence suggesting any collinearity. We ran two logistic regression models in the overall sample; first, a model without (Model 1) and second, a model with (Model 2) four interaction terms between race, ethnicity, educational attainment, and poverty status

All the participants provided written informed consent. The Institutional Review Board of the Westat approved the PATH study protocol.

This study included 25,654 American adults who were either Non-Hispanic White (68.0%), Non-Hispanic Black (15.9%), or Hispanic White (14.9%), or Hispanic Black (1.3%). Table 1 shows descriptive statistics of the overall sample. Participants were almost half men and women.

Table 1. Descriptive statistics.

 

n

%

Race

 

 

   Black

4874

17.1

   White

23625

82.9

Ethnicity

 

 

   Hispanic

4647

16.3

   Non-Hispanic

23852

83.7

Gender

 

 

   Women

14199

49.8

   Men

14300

50.2

Lesbian, Gay, Bisexual

 

 

   No

25992

93.3

   Yes

1868

6.7

Age

 

 

   1 = 18 to 24 years old

7730

27.3

   2 = 25 to 34 years old

5524

19.5

   3 = 35 to 44 years old

4330

15.3

   4 = 45 to 54 years old

4322

15.3

   5 = 55 to 64 years old

3561

12.6

   6 = 65 to 74 years old

1948

6.9

   7 = 75 years old or older

910

3.2

Education

 

 

   1 = Less than high school

3635

12.8

   2 = General education development

1953

6.9

   3 = High school graduate

6695

23.6

   4 = Some college (no degree) or associates degree

10068

35.5

   5 = Bachelor's degree

3954

14.0

   6 = Advanced degree

2024

7.1

Poverty Status

 

 

   Living in poverty

8534

33.1

   Living out of poverty

17212

66.9

Current Hookah

 

 

   Non-Smoker

25962

91.1

   Smoker

2537

8.9

 

Table 2 shows a summary of the output of two logistic regression models. In these models, educational attainment and poverty status were the independent variables, and smoking hookah was the dependent variable. Both models were estimated in the total sample, which included Whites, Blacks, Hispanics, and non-Hispanics. Model 1 only entered the main effects of socioeconomic status indicators (educational attainment and poverty status) as well as race, ethnicity, and covariates. Model 2, however, also added four statistical interaction terms between race and ethnicity with education and poverty status.

Based on Model 1, Blacks (OR = 1.17; 95% CI =1.04 - 1.32) and Hispanics (OR = 1.32; 95% CI = 1.18 - 1.48) were more likely than Whites and non-Hispanics to use hookah. There was a positive association between education and hookah smoking (OR = 1.11; 95% CI =1.06 - 1.15). This model also showed a protective effect of income (living out of poverty) on hookah smoking. Other factors that were associated with hookah use included lesbian, gay, bisexual, and transgender status (OR = 1.79; 95% CI = 1.55 - 2.07), male gender (OR = 1.37; 95% CI = 1.25 - 1.51), and age (OR = 0.39; 95% CI = 0.37 - 0.41).

Model 2 suggested that significant interactions exist between the effects of race and ethnicity with education and poverty status on hookah smoking, suggesting that high education and living out of poverty both have smaller inverse associations with smoking of hookah for Blacks and Hispanics than non-Hispanics and Whites. This was evident by the ORs smaller than 1 for the main effects of socioeconomic resources and ORs larger than 1 for the interaction terms between race and ethnicity with socioeconomic resources. Interactions were significant for education and race (OR = 1.31; 95% CI= 1.18 - 1.46), education and ethnicity (OR = 1.12; 95% CI= 1.02 - 1.22), income [living out of poverty] and race (OR = 1.36; 95% CI= 1.06 - 1.74) and income [living out of poverty] and ethnicity (OR = 1.52; 95% CI= 1.21 - 1.92) (Table 2).

Table 2. Logistic regressions on current hookah smoking models in the pooled sample.

 

 Model 1

Main Effects

 

 

 Model 2

Mode 1 + Interactions

 

 

 

OR

95% CI

p

OR

95% CI

p

Race (Blacks)

1.17

1.04 - 1.32

0.009

0.39

0.27 - 0.56

<0.001

Ethnicity (Hispanics)

1.32

1.18 - 1.48

<0.001

0.73

0.53 - 1.00

0.051

Lesbian, Gay, Bisexual, and Transgender

1.79

1.55 - 2.07

<0.001

1.82

1.57 - 2.09

<0.001

Gender (Men)

1.37

1.25 - 1.51

<0.001

1.38

1.26 - 1.52

<0.001

Age (1-7)

0.39

0.37 - 0.41

<0.001

0.39

0.37 - 0.41

<0.001

Educational Attainment (1-6)

1.11

1.06 - 1.15

<0.001

1.03

0.98 - 1.08

0.272

Living Out of Poverty

0.87

0.79 - 0.97

0.008

0.74

0.65 - 0.84

<0.001

Educational Attainment (1-6) x Race (Blacks)

 

 

 

1.31

1.18 - 1.46

<0.001

Educational Attainment (1-6) x Ethnicity (Hispanics)

 

 

 

1.12

1.02 - 1.22

0.023

Living Out of Poverty x Race (Blacks)

 

 

 

1.36

1.06 - 1.74

0.014

Living Out of Poverty x Ethnicity (Hispanics)

 

 

 

1.52

1.21 - 1.92

<0.001

Intercept

0.41

 

<0.001

0.58

 

<0.001

CI: Confidence Interval;

SE: Standard Error;

OR: Odds Ratio;

Outcome: Current hookah smoking.

The current study showed that while education and poverty status are associated with higher odds of hookah smoking, these associations differ based on race and ethnicity. Race and ethnicity seem to interact with both socioeconomic indicators suggesting that middle-class Blacks and Hispanics are at disproportionately high risk of smoking hookah.

Our MDRs work shows that middle-class Blacks and Hispanics remain at a disproportionately high risk of substance use compared to their White counterparts28,29,32,33. A similar pattern is shown for almost every socioeconomic indicator and health outcome25,26. For example, the magnitude of the effects of education34, income35, marital status36, and employment status37 on diet38, exercise39, depression40, anxiety36, and self-rated health34,41 are smaller for Hispanic and Black compared to non-Hispanic White people. Similar patterns are shown for physical health outcomes such as obesity42, hypertension43, attention deficit hyperactivity disorder44, chronic obstructive pulmonary disease45, disability46, and chronic disease44 are all smaller for Hispanic and Black than White people.

There is a need to understand the role of predatory marketing practices on racial/ethnic and socioeconomic status disparities in tobacco use. We argue that predatory marketing and advertising may be at least in part responsible for the disproportionately high risk of tobacco use among middle-class Black and Hispanic individuals, relative to middle-class Whites. At least some evidence suggests that minority and vulnerable populations are targets of aggressive tobacco marketing47-49. In a recent study, highly educated Blacks and Hispanics reported more tobacco ads, while highly educated Whites reported fewest tobacco ads20. Although more research is needed, if such a hypothesis is supported, then introducing more restrictive and tight marketing policies that do not allow point-of-sale advertisement and flavoring, particularly in areas where ethnic minorities live, may reduce the racial and ethnic disparities that are due to MDRs. Such strategies may disproportionately impact Black and Hispanic populations. In other words, restricting predatory marketing may contribute to the elimination of tobacco use disparities by race, ethnicity, and socioeconomic status; however, this hypothesis needs more research50.

Policies are needed at a national as well as local levels that can reduce the racial/ethnic and socioeconomic disparities in tobacco use, and reducing MDRs of socioeconomic status are among them26,28,29,33-36,42,51,52. Banning discounts, coupons, and flavoring in communities of color may reduce the increasing tobacco use of middle-class Blacks and Hispanics28,29. It is also unknown how tobacco regulations can reduce the MDRs-related disparities in tobacco use, particularly higher than expected tobacco use of middle-class Black and Hispanic people28,29,32,33. We still do not know how marketing strategies disproportionately impact communities of color. To undo racial and ethnic disparities in tobacco use, there might be a need to ban predatory marketing that may be ongoing in the communities of color.

This study has a few methodological limitations. All cross-sectional studies are limited in drawing causal inferences. Thus, our results only suggest association rather than causation. The sample size was smaller for racial and ethnic minority groups. Income, employment, marital status, and area-level socioeconomic status were not a part of this study. Other tobacco products and other ethnic groups were also not included. This study did not measure health. Despite the limitations that were listed, this study still made a unique contribution to the literature.

In the United States, race and ethnic minority status limit the amount of health gain that usually follows the availability of socioeconomic status indicators such as education and income. While socioeconomic status resources help people avoid behaviors such as smoking hookah, racial and ethnic majority groups gain the most, and racial and ethnic minorities gain the least from their available resources. In the same line, we observe an additional risk of hookah smoking in middle-class Blacks and Hispanics. Policymakers should not reduce the problem of health disparities to low socioeconomic status but also societal mechanisms that reduce the marginal returns of socioeconomic resources. Thus, inequalities remain across all socioeconomic status levels. Policymakers should be aware that health disparities also affect middle-class Blacks and Hispanics, which is one of the major growing sections of the US population.

The research reported in this publication was supported by the National Cancer Institute of the National Institutes of Health and Food and Drug Administration Center for Tobacco Products under Award Number U54CA229974. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health or the Food and Drug Administration. Shervin Assari is also funded by the National Institutes of Health awards U54MD008149, R25 MD007610, U54MD007598, U54 TR001627, CA201415-02 and 5S21MD000103.

The authors declare no conflict of interest.

S.A. conceptualized the study, analyzed the data, prepared the first draft of the paper, and acquired the funding. M.B. and H.C. contributed to the revision and conceptualization of the study. All authors approved the final draft.

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Article Info

  • Journal of Mental Health & Clinical Psychology
  • Article Type : Original Research Article
  • View/Download pdf

Article Notes

  • Published on: January 17, 2020

Keywords

  • Population groups

  • Race
  • Hispanics
  • Ethnicity
  • Latinos
  • Whites
  • Blacks
  • African Americans
  • Socioeconomic status
  • Socioeconomic position
  • Poverty status
  • Education
  • Smoking
  • Tobacco use

*Correspondence:

Dr. Shervin Assari, MD MPH
Department of Family Medicine, Charles R Drew University of Medicine and Science, Los Angeles, CA, USA
Email: assari@umich.edu.

©2020 Assari S. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License.