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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