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Table 4 Multivariable logistic regression model for odds of lower extremity injury among bicyclists in Ohio, 2013–2017

From: A cross-sectional study of characteristics of bicyclist upper and lower extremity injuries in bicycle-vehicle crashes in Ohio, United States, 2013–2017

Variable N (%) Crude estimate
(standard error)
Crude odds ratio (95%CI) a Adjusted estimate
(standard error)
Adjusted odds ratio (95% CI) b
Bicyclist age category, years
 3–14 514 (54.7) 0.27 (0.10) ** 1.31 (1.07–1.60) 0.29 (0.11) ** 1.34 (1.09–1.66)
 15–24 583 (53.1) 0.21 (0.09) * 1.23 (1.02–1.47) 0.22 (0.09) 1.24 (1.03–1.49)
 25–44 400 (48.0) -- c -- c -- c -- c
 45–64 392 (48.4) 0.02 (0.10) 1.02 (0.83–1.24) 0.05 (0.10) 1.05 (0.86–1.28)
 65+ 74 (46.5) −0.06 (0.17) 0.94 (0.67–1.33) − 0.01 (0.18) 0.99 (0.70–1.40)
Bicyclist sex
 Male 1552 (50.2) -- c -- c -- c -- c
 Female 411 (54.7) 0.17 (0.09) * 1.19 (1.01–1.41) 0.69 (0.09) ** 1.19 (1.01–1.41)
Driver sex
 Male 1087 (52.1) -- c -- c -- c
 Female 876 (49.9) −0.08 (0.07) 0.92 (0.80–1.05) − 0.09 (0.07) 0.91 (0.79–1.05)
Intersection related
 Not intersection related 751 (48.9) -- c -- c -- c -- c
 Intersection related 1212 (52.5) 0.14 (0.07) * 1.15 (1.00–1.33) 0.15 (0.07) * 1.16 (1.01–1.33)
Time-of-day
 Daytime 1514 (50.9) -- c -- c -- c -- c
 Nighttime 449 (51.8) 0.04 (0.09) 1.04 (0.88–1.23) 0.07 (0.09) 1.07 (0.91–1.27)
  1. Note: a Odds ratio calculated from the logistic regression model with a single explanatory variable
  2. b Odds ratio calculated from the multivariable logistic regression model including covariates for cyclist age group, cyclist sex, driver sex, intersection related crash, and time-of-day
  3. c refers to reference group
  4. Data sources: Ohio Hospital Association and Ohio Department of Public Safety
  5. Bolded values indicate the 95% confidence interval excludes 1
  6. * refers the p value < 0.05
  7. ** refers the p value < 0.01