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. Author manuscript; available in PMC: 2016 Aug 18.
Published in final edited form as: Traffic Inj Prev. 2015 Aug 18;16(6):533–539. doi: 10.1080/15389588.2014.995789

Table 1.

Descriptive statistics

State Patrol (n=48) Local Agencies (n=1043)

Jurisdiction/Agency characteristics mean (SD) mean (SD)
Population 6,329,505 (6,939,570) 67,521 (313,979)
Black proportion 10.0 (8.9) 8.7 (15.3)
Age 15–30 proportion 22.2 (1.2) 21.0 (6.0)
Poverty proportion 13.3 (2.7) 15.0 (8.9)
Number of officers 1227.6 (1418.3) 88.8 (326.7)
Number of officers per 1 mil. (state) or 1000 (local) population 258.4 (332.8) 2.7 (4.8)

Percent1 Percent2

Has ≥1 officer assigned to alcohol-related enforcement -- 25.3
Has alcohol-related division -- 7.0
Conducted sobriety checkpoints (in last year)
 No 25.0 58.5
 Once 0 9.5
 Few times (state)/2–3 times (local) 16.7 13.5
 Monthly (state)/4–5 times (local) 25.0 7.1
 Weekly (state)/6+ times (local) 20.8 11.3
 Daily (state) 4.2 --
Conducted saturation patrols (in last year)
 No 4.2 37.3
 Once 0 8.5
 Few times (state)/2–3 times (local) 12.5 15.5
 Monthly (state)/4–5 times (local) 41.7 10.8
 Weekly (state)/6+ times (local) 27.1 27.9
 Daily (state) 8.3 --
Conducted open container enforcement (in last year) 43.8 41.1
Drink-driving enforcement index (sobriety checkpoints, saturation patrols, open container)
 None 2.1 27.7
 One of three 12.5 27.3
 Two of three 56.3 28.5
 All three 29.2 16.5
How common is drinking and driving
 Not common 8.3 6.9
 Somewhat common 52.1 66.5
 Very common 33.3 26.5
Resources devoted to drinking & driving enforcement
 Do not work on the issue 0 6.8
 State: 1–10%; Local 1–4% 4.2 18.9
 State: 11–25%; Local: 5–10% 32.6 30.5
 State: 26–50%; Local: 11–25% 25.0 28.1
 State: 51–75%; Local: Over 25% 22.9 15.7
 State: Over 75% 18.8 --
Region
 Wet (North Central/New England) 41.7 37.5
 Moderate (Mid-Atlantic, Pacific, South Coast) 35.4 36.8
 Dry (South) 22.9 25.7
1

Not all items sum to 100% due to missing data

2

Local agency survey data weighted to account for sampling and non-response -- item not included on survey