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Table 3 Sensitivity analysis. Pooled relative risks considering low RoB time-series studies

From: Effects of air pollution on restricted activity days: systematic review and meta-analysis

Pollutant

Outcome

Domain

Articles

N

RR (95%CI)

(Random-effects model)

PM10

WLD and SLD combined

Confounding

4

4

1.0120 (0.9997–1.0244)

PM10

WLD and SLD combined

Outcome

4

4

1.0240 (0.9923–1.0567)

PM2.5

SLD

Confounding

3

5

1.0146 (0.9987–1.0307)

PM2.5

SLD

Outcome

2

4

1.0124 (0.9985–1.0265)

NO2

WLD and SLD combined

Confounding

3

3

1.0065 (0.9997–1.0133)

NO2

WLD and SLD combined

Outcome

3

3

0.9796 (0.9631–0.9963)

  1. PM10 particulate matter with aerodynamic diameters less or equal than 10 μm, PM2.5 particulate matter with aerodynamic diameters less or equal than 2.5 μm, NO2 nitrogen dioxide, WLD work-loss day, SLD school-loss day, Articles number of articles included, N number of effect sizes, RR pooled relative risk, calculated for a 10 μg/m3 increase in the pollutant level, 95% CI 95% confidence interval