Table 3.
|
Compared to segments without
infrastructure segments; no confounding adjustment |
Estimated effects: adjusted for
roadway type, area-level population density and household
incomea |
||
---|---|---|---|---|
Infrastructure type | IRR, at-risk measure: Strava-reported bicycle-distance (95% CI) | IRR, at-risk measure: estimated (IPSW) bicycle-distance adjusted for Strava use (95% CI) | IRR, at-risk measure: Strava-reported bicycle-distance (95% CI) | IRR, at-risk measure: estimated (IPSW) bicycle-distance adjusted for Strava use (95% CI) |
Off-street paved trail | 0.0 (0.0, 0.0) | 0.0 (0.0, 0.0) | N/R | N/R |
Protected bike lane | 1.5 (0.0, 3.5) | 1.1 (0.0, 2.5) | 0.7 (0.0, 3.4) | 0.5 (0.0, 2.5) |
Buffered bike lane | 0.0 (0.0, 0.0) | 0.0 (0.0, 0.0) | 0.0 (0.0, 0.0) | 0.0 (0.0, 0.0) |
Conventional bike lane | 3.3 (1.3, 3.9) | 3.7 (1.3, 4.0) | 2.6 (1.2, 5.5) | 2.8 (1.2, 6.0) |
Shared-travel lane | 1.2 (0.2, 1.8) | 1.4 (0.2, 2.0) | 1.1 (0.2, 2.9) | 1.1 (0.2, 2.9) |
No infrastructure | Referent | Referent | N/A | N/A |
Abbreviations: IRR, incidence rate ratio; CI, confidence interval; IPSW, inverse-probability-of-selection weighted; N/R, not reported; N/A, not applicable.
Estimated effect of treatment on the treated via model-based standardization. Please see text for additional details.