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Discrepancy in socioeconomic status does not fully explain the variation in diet quality between consumers of different coffee types

Abstract

Purpose

Habitual consumers of different coffee types may vary in socioeconomic status (SES), which is an important determinant of diet quality. Nonetheless, research on diet quality among coffee consumers was scarce. We aimed to compare the diet quality of coffee consumers with different preferences towards coffee type and additive usage.

Methods

In this cross-sectional analysis, intake data of food, coffee, and additive usage from the adult respondents of the 2011–2012 Australian Health Survey were used. Participants were grouped according to the type of coffee (espresso and ground coffee, E&G; coffee made from coffee mixes and instant coffee, M&I; non-consumers, NC) and additives (milk, sugar, and intense sweetener) consumed. Adjusted food group intake was compared between consumption groups using general linear model.

Results

E&G drinkers had better SES than M&I and NC. After adjusting for covariates, the mean dairy intake of E&G drinkers was 22.2% higher than M&I drinkers (p < 0.001) and 33.1% higher than NC (p < 0.001). Mean discretionary food intake of E&G drinkers was 12.1% lower than M&I (p = 0.003) and 12.3% lower than NC (p = 0.001). In terms of additive usage, non-users of coffee additive had the lowest dairy food intake and the highest discretionary food intake.

Conclusions

Coffee consumers’ different preferences towards coffee type and additive usages reflected significant variations in their diet quality, even after adjustment of SES. Therefore, future epidemiological studies should consider separating coffee drinkers according to their habitual consumption of different types of coffee.

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Abbreviations

SES:

Socioeconomic status

T2DM:

Type 2 diabetes mellitus

E&G:

Espresso and ground coffee

M&I:

Mixed and instant coffee

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Acknowledgements

The authors thank the Australian Bureau of Statistics for permission to use the 2011-12 NNPAS data.

Author information

Affiliations

Authors

Contributions

THTW, ZS and JCYL were responsible for data analysis, and together with AR interpreted the data and wrote the manuscript. JCYL has the primary responsibility for the final content of this manuscript. The Australian Bureau of Statistics is not responsible for the current secondary analysis.

Corresponding author

Correspondence to Jimmy Chun Yu Louie.

Ethics declarations

Ethics approval and consent to participate

Ethics approval for the NNPAS was granted by the Australian Government Department of Health and Ageing Departmental Ethics Committee in 2011. Ethics approval was not required for the current secondary data analysis.

Consent for publication

Not applicable.

Availability of data and materials

The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

Conflict of interest

This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors. The authors declare that there are no competing interests.

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Wong, T.H.T., Sui, Z., Rangan, A. et al. Discrepancy in socioeconomic status does not fully explain the variation in diet quality between consumers of different coffee types. Eur J Nutr 57, 2123–2131 (2018). https://doi.org/10.1007/s00394-017-1488-x

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  • DOI: https://doi.org/10.1007/s00394-017-1488-x

Keywords

  • Coffee type
  • Diet quality
  • Sugar
  • Australia
  • Coffee additive
  • Coffee