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Table 1 Characteristics of study population and prevalence of calling while driving (CWD)a

From: Cellphone laws and teens’ calling while driving: analysis of repeated cross-sectional surveys in 2013, 2015, 2017, and 2019

Variables Unweighted N % of CWD (95%CI)b
Never
(0 day)
Sometimes
(1–9 days)
Frequent
(10–30 days)
Overall 65,044 47 (45, 49) 36 (35, 38) 16 (15, 18)
Survey year
 2013 12,166 44 (42, 46) 37 (36, 39) 18 (17, 20)
 2015 8717 46 (44, 49) 39 (37, 41) 14 (13, 16)
 2017 27,168 50 (47, 53) 36 (33, 38) 15 (13, 17)
 2019 16,993 54 (52, 55) 35 (33, 36) 12 (11, 13)
Age (Years)
 15 2787 71 (66, 77) 22 (17, 26) 7 (4, 11)
 16 26,256 60 (58, 62) 30 (28, 33) 10 (8, 12)
 17 25,986 43 (40, 46) 39 (36, 41) 18 (16, 20)
  ≥ 18 10,015 37 (33, 41) 41 (38, 44) 22 (19, 25)
Sex
 Female 31,498 48 (45, 50) 37 (36, 39) 15 (13, 16)
 Male 33,230 47 (45, 49) 35 (33, 38) 18 (16, 19)
 Missing 316    
Race
 White 41,452 40 (38, 42) 40 (38, 42) 20 (19, 22)
 Black or African American 7128 58 (53, 63) 30 (25, 34) 12 (9, 15)
 Hispanic/Latino 7547 55 (51, 59) 33 (30, 36) 12 (9, 15)
 Otherc 7304 57 (52, 62) 34 (28, 39) 9 (7, 12)
 Missing 1613    
States
 AK 1262 54 (50, 58) 35 (31, 39) 11 (8, 13)
 AR 907 37 (33, 42) 37 (33, 41) 26 (22, 30)
 CT 3717 62 (60, 64) 29 (27, 31) 9 (8, 10)
 MD 30,657 67 (66, 68) 25 (24, 26) 8 (7, 8)
 MA 4201 54 (50, 58) 35 (32, 37) 12 (10, 13)
 MO 2647 39 (36, 41) 42 (39, 45) 19 (18, 21)
 MT 10,292 39 (38, 41) 43 (42, 44) 17 (16, 19)
 NE 2325 33 (30, 35) 49 (46, 51) 19 (16, 21)
 NJ 617 46 (40, 52) 37 (33, 42) 16 (12, 21)
 ND 4606 28 (26, 30) 49 (47, 51) 23 (21, 24)
 RI 859 49 (46, 53) 40 (34, 46) 11 (7, 14)
 SC 1007 46 (42, 51) 33 (29, 38) 20 (17, 23)
 TX 864 49 (44, 54) 35 (31, 39) 16 (13, 19)
 UT 1083 35 (30, 41) 48 (43, 52) 17 (15, 19)
  1. CI Confidence Interval;
  2. aData were from state Youth Risk Behavior Surveys in 14 states (2013, 2015, 2017 and 2019), the United States.
  3. bWeighted percentage of students that reported talking on a phone while driving during the 30 days before the survey (among students who drove). Percentages may not total 100 due to rounding.
  4. cOther included: American Indian/Alaskan Native, Asian, Native Hawaiian or Other Pacific Islander, and Multiple- Non-Hispanic/Latino
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