Relationship between health-related quality of life and respiratory health status among coal-based sponge iron plant workers in Barjora, India.

Background: Many coal-based sponge iron plant workers have poor health-related quality of life in general, and specifically a poor respiratory health status. However, the relationship between their health-related quality of life and respiratory health status is unknown.

Aim: This study investigated the relationship between health-related quality of life, measured using the EuroQol-5D (EQ5D), and respiratory health status, measured using the St. George's Respiratory Questionnaire (SGRQ), among coal-based sponge iron plant workers in Barjora, India.

Method: A cross-sectional study was conducted among coal-based sponge iron plant workers in Barjora, and complete data were available on 252 participants. Spearman's rank correlation coefficients were reported to show the strength of relationship between health-related quality of life and respiratory health status.

Results and conclusion: Significant correlations were found between all EQ5D dimensions/visual analogue scale (VAS) and all SGRQ scores except between EQ5D-VAS and SGRQ-activity. A range of correlations was found. They were moderate between EQ5D-anxiety/depression and SGRQ-symptom, EQ5D-VAS and SGRQ-symptom, and EQ5D-anxiety/depression and SGRQ-total, but weak between all the other factors.