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Table 1 Frequencies of handheld vs. hands-free cellphone use while driving behaviors

From: Driving contradictions: behaviors and attitudes regarding handheld and hands-free cellphone use while driving among young drivers

N (%a) >  50% of tripsb ≤ 50% of trips Never I don't use this technology
Handheldc cellphone use
 Talking on the phone 6 (10) 47 (76) 9 (14) NA
 Sending messagesd 11 (18) 41 (66) 10 (16) NA
 Reading messages 14 (23) 45 (72) 3 (5) NA
Hands-freee cellphone use
 Talking on the phone 6 (10) 38 (61) 6 (10) 12 (19)
 Sending messages 7 (11) 20 (32) 7 (11) 28 (45)
 Reading messages 7 (11) 12 (19) 12 (19) 31 (50)
  1. Abbreviation: NA Not applicable
  2. aRow percentages may not sum to 100 due to rounding
  3. bParticipants were asked to estimate the proportion of trips in the 30 days prior to the baseline survey they conducted each of the presented behaviors
  4. cHandheld use was defined as physically holding the phone
  5. dMessages were defined as text or email messages
  6. eHands-free use was defined as using devices such as Bluetooth and speaker phone so there is no physical interaction between the driver and their phone when engaging in the aforementioned behaviors