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Table 1 Questionnaire

From: A survey of influence of work environment on temporomandibular disorders-related symptoms in Japan

  Question item Abbreviated form
Q1* If you open your mouth wide, can you fit 3 fingers held vertically in your mouth? Limited mouth opening
Q2* Do you experience pain in the face, jaw, temple, or in front of the ear when you open and close your mouth? Mouth-opening pain
Q3* Can you open your mouth without any deviation? Mouth-opening deviation
Q4* Do you experience pain in the face, jaw, temple, or in the front of the ear when you eat chewy foods such as beef jerky, dried cuttlefish, or octopus? Chewing-induced pain
Q5 How many hours per day do you use a personal computer at work? (h) PC use
Q6 How many hours do you drive a car while working? (h) Driving
Q7 How many hours per day do you perform precise work (e.g., working with parts by hand) while working? (h) Precise work
Q8 How many hours does it take for you to commute to work? (h) Commuting
Q9 How many hours per day do you spend at home before going to bed? (h) Before sleep
Q10 How many hours do you sleep per day? (h) Sleep
Q11 How many hours per day do you attend business meetings? (h) Meetings
Q12 How many hours per day do you perform physical labor at work? (h) Physical labor
  1. *The subjects were asked to answer question items 1–4 on a 5-point numeric rating scale where 1 = strongly agree, 2 = weakly agree, 3 = neither agree nor disagree, 4 = weakly disagree, and 5 = strongly disagree.