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Table 1 Demographic characteristics of the sample (N = 915)

From: Association of Photopic and Mesopic Contrast Sensitivity in older drivers with risk of motor vehicle collision using naturalistic driving data

Characteristic

n

% a

Age, years

 60–69

310

33.9

 70–79

396

43.3

 80–90

200

21.9

 90–99

9

1.0

Gender

 Men

491

53.7

 Women

424

46.3

Race

 White

871

95.2

 Black

15

1.6

 Otherb

22

2.4

 Unknown

7

0.8

Ethnicity

 Hispanic or Latino

12

1.3

 Not Hispanic or Latino

872

95.3

 Unknown

31

3.4

  1. aPercents may not sum to 100 due to rounding
  2. bOther includes Asian, American Indian or Alaska Native, and Native Hawaiian or Other Pacific Islander