The Effect of Treatment during A Haze/Post-Haze Year on Subsequent Respiratory Morbidity Status among Successful Treatment Tuberculosis Cases

Suyanto Suyanto, Alan Geater and Virasakdi Chongsuvivatwong
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Suyanto Suyanto: Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hat Yai 90110, Thailand
Alan Geater: Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hat Yai 90110, Thailand
Virasakdi Chongsuvivatwong: Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hat Yai 90110, Thailand

IJERPH, 2019, vol. 16, issue 23, 1-11

Abstract: The purpose of this study was to evaluate the respiratory morbidity status within the two to three years among successful (completed/cured) treatment of tuberculosis cases during a haze year (2015) and a post-haze year (2016). The study was conducted among 133 cases of a 2015 group and 103 cases of a 2016 group between January to March 2018 in Pekanbaru city, Indonesia. The St George Respiratory Questionnaire (SGRQ) was used to assess respiratory morbidity status. A higher score corresponds to worse respiratory morbidity. Based on a directed acyclic graph, quantile regression models were constructed to assess the associations between haze/post-haze year and the SGRQ (symptom, activity, impact, and total) domains score. The subsequent respiratory morbidity status of tuberculosis (TB) cases was poorer among respondents treated during a haze year (2015). Among SGRQ domains, only the activity domain score showed significant difference, in which the median for the 2015 group was 23.7 (inter-quartile range (IQR); 17.2, 30.9) compared to 18.4 (IQR; 11.9, 24.8) for the 2016 group. The effect was limited to the 2015 group who were exposed by an average PM 10 index ≥ 55 during TB treatment. This raises concern for monitoring and improving the quality of life of TB patients treated during a haze year.

Keywords: TB; air pollution; respiratory morbidity; year of treatment (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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