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Table 1 Comparison of the prevalence of seatbelt and mobile phone use among drivers in the two observation periods

From: The effectiveness of introducing detection cameras on compliance with mobile phone and seatbelt laws: a before-after study among drivers in Riyadh, Saudi Arabia

Location

Seatbelt Use % [95%CI]

Mobile Phone Use % [95%CI]

 

Pre-cameras

Post-cameras

Pre-cameras

Post-cameras

Overall (N = 3400)

33.94% [31.72–36.22]

75.82% [73.72–77.80]

13.82% [12.26–15.54]

9.88% [8.55–11.39]

Highways (N = 1600)

45.25% [41.82–48.72]

89.25% [86.90–91.21]

15.12% [12.80–17.78]

9.25% [7.42–11.46]

East

36.00% [29.59–42.94]

85.50% [79.85–89.76]

19.00% [14.10–25.09]

13.00% [8.97–18.46]

North

46.50% [39.63–53.49]

91.50 [86.70–94.67]

17.00% [12.37–22.90]

5.50% [3.05–9.70]

West

40.50% [33.86–47.50]

86.00% [80.41–90.18]

17.50% [12.80–23.45]

9.50% [6.11–14.46]

South

58.00% [50.98–64.70]

94.00% [89.68–96.57]

7.00% [4.17–11.51]

9.00% [5.72–13.88]

Inner Intersection (N = 1800)

23.88% [21.21–26.79]

63.88% [60.68–66.96]

12.66% [10.64–15.00]

10.44% [8.60–12.62]

EN

13.00% [7.62–21.28]

55.00% [45.01–64.60]

17.00% [10.75–25.83]

11.00% [6.13–18.94]

ISH

21.00% [14.00–30.25]

39.00% [29.81–49.03]

19.00% [12.36–28.05]

14.00% [8.39–22.43]

LL

11.00% [6.13–18.94]

50.00% [40.15–59.84]

15.00% [9.16–23.57]

14.00% [8.39–22.43]

LM

27.00% [19.09–36.69]

81.00% [71.94–87.63]

6.00% [2.68–12.87]

8.00% [4.00–15.35]

LU

15.00% [9.16–23.57]

49.00% [39.19–58.87]

9.00% [4.69–16.56]

18.00% [11.55–26.94]

ML

53.00% [43.05–62.70]

90.00% [82.23–94.59]

8.00% [4.00–15.35]

4.00% [1.48–10.33]

MM

24.00% [16.52–33.49]

84.00% [75.29–90.04]

10.00% [5.40–17.76]

8.00% [4.00–15.35]

MU

30.00% [21.71–39.84]

84.00% [75.29–90.04]

13.00% [7.62–21.28]

8.00% [4.00–15.35]

MUN

21.00% [14.00–30.25]

43.00% [33.52–53.02]

17.00% [10.75–25.83]

9.00% [4.69–16.56]

  1. Bold is significant at the 0.05 level