Structural equation models of health behaviour, psychological well-being, symptom severity and quality of life in abdominal bloating

PeerJ. 2024 Apr 30:12:e17265. doi: 10.7717/peerj.17265. eCollection 2024.

Abstract

Background: The objective of this study was to investigate the inter-relationship between psychosocial variables and their impact on symptom severity and quality of life (QoL) concerning abdominal bloating.

Methods: The study adopted a cross-sectional design with purposive sampling. Participants who consented and met the criteria for bloating based on the Rome IV classification completed designated questionnaires. Independent variables comprised health beliefs, intentions, health-promoting behaviors, social support, depression, and anxiety, while dependent variables included bloating severity (general and within 24 h) and QoL. Structural Equation Modeling (SEM) was conducted utilizing Mplus 8.0 to analyze the relationships between these factors.

Results: A total of 323 participants, with a mean age of 27.69 years (SD = 11.50), predominantly females (64.7%), volunteered to participate in the study. The final SEM model exhibited good fit based on various indices (CFI = 0.922, SRMR = 0.064, RMSEA (95% CI) = 0.048 (0.041-0.054), p-value = 0.714), with 15 significant path relationships identified. The model explained 12.0% of the variance in severity within 24 h, 6% in general severity, and 53.8% in QoL.

Conclusion: The findings underscore the significant influence of health beliefs, intentions, behaviors, social support, depression, and anxiety on symptom severity and QoL in individuals experiencing abdominal bloating.

Keywords: Bloating; Health belief; Health promoting behaviour; Intention; Quality of life; Severity.

MeSH terms

  • Adult
  • Anxiety / epidemiology
  • Anxiety / psychology
  • Cross-Sectional Studies
  • Depression / epidemiology
  • Depression / psychology
  • Female
  • Health Behavior*
  • Humans
  • Latent Class Analysis*
  • Male
  • Middle Aged
  • Psychological Well-Being
  • Quality of Life* / psychology
  • Severity of Illness Index
  • Social Support
  • Surveys and Questionnaires
  • Young Adult

Grants and funding

This work was supported by a RUI Grant of Universiti Sains Malaysia: 1001.PPSP.8012250. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.