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Table 2 Subjects’ background and work environment parameters by TRS score group

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

Subjects’ background and work environment parameters

Low-TRS group (score ≤7)

High-TRS group (score ≥8)

Total

P-value

Subjects (%)

1524(77.4)

445 (22.6)

1969 (100)

-

Gender (% women)

186 (12.2)

87 (19.6)

273 (13.9)

< 0.001 a

Age: mean (SD)

41.3 (9.8)

39.7 (8.7)

41.0 (9.6)

0.001 b

PC use (h): mean (SD)

5.16 (2.84)

5.51 (2.89)

5.24 (2.85)

0.022 b

Driving (h): mean (SD)

0.57 (0.70)

0.57 (0.83)

0.57 (0.73)

0.932 b

Precise work (h): mean (SD)

0.97 (1.65)

1.08 (1.62)

1.00 (1.65)

0.210 b

Commuting (h): mean (SD)

1.32 (0.95)

1.25 (0.94)

1.31 (0.95)

0.129 b

Before sleep (h): mean (SD)

3.49 (1.30)

3.59 (1.32)

3.51 (1.31)

0.150 b

Sleep (h): mean(SD)

5.95 (1.05)

5.91 (1.00)

5.94 (1.03)

0.471 b

Meetings (h): mean (SD)

0.88 (0.99)

0.78 (0.92)

0.86 (0.98)

0.046 b

Physical labor (h): mean (SD)

0.20 (0.65)

0.19 (0.51)

0.20 (0.62)

0.715 b

  1. TRS, temporomandibular disorder-related symptoms; PC, personal computer; SD, standard deviation; a, Chi-square test; b, t-test.