Table 3.
The estimated effect measures in the post-treatment period for each infrastructure group.
| Outcome measurea | WST-PCG | LS-TECH-IAP | EST-EXT | PCT | MCD | All, jointly | |
|---|---|---|---|---|---|---|---|
| Wide-net treatment-area | |||||||
| Square-mile-months treated | 117.5 | 71 | 52 | 62.5 | 26 | 325 | |
| Ratio (95% CI) | IPSW | 1.45 (1.12; 1.86) | 0.98 (0.90; 1.06) | 1.08 (0.89; 1.26) | 1.08 (0.89; 1.25) | 0.97 (0.85; 1.09) | 1.04 (0.94; 1.11) |
| Cumulative difference (bicycle-miles) (95% CI) | IPSW | 180,035 (58,115; 275,829) | −29,901 (−183,818; 92,848) | 166,905 (−339,210; 512,992) | 37,648 (−72,369; 109,750) | −14,972 (−87,008; 45,427) | 220,919 (−422,338; 667,057) |
| Difference per square mile-month (bicycle-miles) (95% CI) | IPSW | 1,532 (495; 2,347) | −421 (−2,589; 1,308) | 3,210 (−6,523; 9,865) | 602 (−1,158; 1,756) | −576 (−3,346; 1,747) | 680 (−1,300; 2,052) |
| Ratio (95% CI) | Strava-reported | 1.41 (1.34; 1.48) | 1.19 (1.11; 1.21) | 1.07 (1.04; 1.10) | 1.15 (1.03; 1.31) | 1.13 (1.10; 1.16) | 1.13 (1.11; 1.16) |
| Narrower treatment area | |||||||
| Square-mile-months treated | 51 | 21.5 | 19.5 | 22.5 | 13 | 127.5 | |
| Ratio (95% CI) | IPSW | 1.55 (1.10; 2.14) | 1.00 (0.89; 1.12) | 1.08 (0.93; 1.31) | 1.21 (0.92; 1.47) | 0.96 (0.84; 1.11) | 1.10 (0.99; 1.18) |
| Cumulative difference (bicycle-miles) (95% CI) | IPSW | 125,726 (35,539; 189,344) | 1,153 (−62,459; 57,645) | 72,076 (−105,259; 258,174) | 36,559 (−23,273; 70,596) | −12,627 (−63,791; 36,682) | 245,086 (−50,187; 451,588) |
| Difference per square mile-month (bicycle-miles) (95% CI) | IPSW | 2,465 (697; 3,713) | 54 (−2,905; 2,681) | 3,696 (−5,398; 13,240) | 1,625 (−1,034; 3,138) | −971 (−4,907; 2,822) | 1,922 (−394; 3,542) |
| Ratio (95% CI) | Strava-reported | 1.73 (1.63; 1.84) | 1.18 (1.15; 1.20) | 1.10 (1.06; 1.14) | 1.20 (1.00; 1.49) | 1.14 (1.11; 1.17) | 1.18 (1.15; 1.22) |
a
Either estimated bicycle-distance via inverse-probability-of-selection weighting (IPSW) or Strava-reported bicycle-distance. Other abbreviations: WST-PCG, Atlanta BeltLine Westside Trail & Proctor Creek Greenway; LS-TECH-IAP, Luckie Street NW Protected Bike Lane & Georgia Tech PATH Parkway & Ivan Allen PATH; EST-EXT, Atlanta BeltLine Eastside Trail Extension; MCD, North McDonough St Protected Bike Lane.