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

Variable

N (%)

Crude estimate

(standard error)

Crude odds ratio (95%CI) a

(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