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Aim <p>This study assesses the influence of various specific health conditions as activity limitations and groups of chronic diseases, in estimating poor self-rated health for the Spanish population aged 30–60, stratified by the intersections of gender and social class. Moving beyond unidimensional social gradients, the research utilises decision tree analysis to identify specific configurations of SRH responses that align with the epidemiological profiles of distinct intersectional strata.</p> Methods <p>Data were drawn from the 2023 Spanish Health Survey (ESdE), focusing on a sample of 10,210 adults aged 30–60. This age bracket was selected to capture health inequality dynamics during the working life-course. Specific machine learning decision trees (J48 algorithm) were employed to assess the pathways for classifying individuals with poor SRH across six distinct intersectional groups.</p> Results <p>Resulting decision trees differ significantly in composition, shape, and length across strata. A clear trend emerged: less skilled groups exhibited higher tree complexity, reflecting a more rapid accumulation of chronic illnesses at earlier ages.</p> Conclusion <p>This research contributes to the emerging field of study regarding what truly underlies individuals’ general assessment of their health. The resulting decision trees illustrate the social gradient in health in a novel way that enriches the understanding of health inequalities. Instead of simply showing a linear trend across a one-dimensional variable, these trees reveal that as disadvantages accumulate through the intersection between gender and social class, the combination of relevant diseases do not only become more complex, but also distinct, in specific and unique ways for each group, as the intersectional framework predicts.</p>

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Intersection of gender and class in the assessment of self-rated health in the Spanish population: a classification tree study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月29日

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  • Jordi Gumà-Lao,
  • Núria Pedrós Barnils,
  • Daniel La Parra-Casado

摘要

Aim

This study assesses the influence of various specific health conditions as activity limitations and groups of chronic diseases, in estimating poor self-rated health for the Spanish population aged 30–60, stratified by the intersections of gender and social class. Moving beyond unidimensional social gradients, the research utilises decision tree analysis to identify specific configurations of SRH responses that align with the epidemiological profiles of distinct intersectional strata.

Methods

Data were drawn from the 2023 Spanish Health Survey (ESdE), focusing on a sample of 10,210 adults aged 30–60. This age bracket was selected to capture health inequality dynamics during the working life-course. Specific machine learning decision trees (J48 algorithm) were employed to assess the pathways for classifying individuals with poor SRH across six distinct intersectional groups.

Results

Resulting decision trees differ significantly in composition, shape, and length across strata. A clear trend emerged: less skilled groups exhibited higher tree complexity, reflecting a more rapid accumulation of chronic illnesses at earlier ages.

Conclusion

This research contributes to the emerging field of study regarding what truly underlies individuals’ general assessment of their health. The resulting decision trees illustrate the social gradient in health in a novel way that enriches the understanding of health inequalities. Instead of simply showing a linear trend across a one-dimensional variable, these trees reveal that as disadvantages accumulate through the intersection between gender and social class, the combination of relevant diseases do not only become more complex, but also distinct, in specific and unique ways for each group, as the intersectional framework predicts.