Survey context and question wording affects self reported annoyance due to road traffic noise: a comparison between two cross-sectional studies
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Summary
This study investigates how survey context and question wording influence self-reported annoyance due to road traffic noise, addressing methodological challenges in comparing epidemiological studies. The authors aimed to determine if the framing of a survey—specifically whether it explicitly focused on noise and health or served as a broad public health assessment—affected participation rates and annoyance reporting. This comparison is critical for interpreting pooled analyses and meta-analyses in environmental health, where inconsistent methodologies can lead to contradictory results. The researchers compared data from two cross-sectional surveys conducted in Malmö, Sweden, in 2007 and 2008. The first survey (Env&Health07, n=2,612) explicitly stated its aim was to investigate residential environmental exposure, particularly noise and health. The second survey (PHSurvey08, n=3,810) was a broad public health survey with a wider scope. Both surveys used comparable questions regarding noise annoyance, though Env&Health07 utilized a 5-point frequency scale while PHSurvey08 used a 4-point scale. Noise exposure was estimated using Geographic Information Systems (GIS) and a simplified Nordic prediction model to calculate the 24-hour equivalent sound level (LAeq,24h) at participants' residential addresses. Logistic regression was employed to analyze the relationship between noise exposure and annoyance, adjusting for demographic factors and railway noise. The results indicated that annoyance reported at least once a week was significantly more prevalent in the noise-focused survey (Env&Health07) compared to the general survey (PHSurvey08) at exposure levels exceeding 45 dB(A). However, no significant differences were found when comparing the extreme response categories ("never" and "every day"). In the Env&Health07 survey, individuals who identified as "noise sensitive" were more likely to respond quickly and reported higher levels of annoyance than non-sensitive participants. Despite these findings, the authors concluded that the primary driver of the difference in annoyance reporting was the use of different response scales rather than the survey context itself. They noted that extreme alternatives are preferable for comparison when dichotomizing data. The significance of this study lies in its methodological implications for environmental epidemiology. The findings suggest that while survey context may influence participation bias—particularly among noise-sensitive individuals—it does not necessarily distort the core association between noise exposure and annoyance if appropriate response scales are used. The authors recommend using extreme response alternatives to facilitate valid comparisons between studies with different survey designs. This work highlights the importance of standardizing survey instruments and acknowledging scale differences to ensure accurate interpretation of noise annoyance data across different populations and studies.
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| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | Crossref | — | — | 1 | 2026-06-20 |
| archive | success | canonical_url | — | — | 1 | 2026-06-26 |
| extract | success | pdftotext | — | — | 2 | 2026-06-26 |
| clean | success | clean | — | — | 1 | 2026-06-26 |
| chunk | success | chunk | — | — | 1 | 2026-06-26 |
| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 1 | 2026-06-26 |
| enrich | success | openalex | — | — | 1 | 2026-06-26 |
| promote | success | — | — | — | 1 | 2026-06-20 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 1 | 2026-06-26 |
| tag | success | vector_similarity | — | — | 6 | 2026-06-26 |
| verify | success | — | — | — | 1 | 2026-06-26 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-26; verification: verified.
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