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Table 1 Characteristics of the study population

From: Neurological symptoms among dental assistants: a cross-sectional study

  Dental assistants (n = 41) Assistant nurses (n = 64) p-value
  Mean (SD) range Mean (SD) range  
Age 57.8 (6.7) 37–67 52.5 (8.3) 36–67 0.001*
Years at this particular work 29.7 (8.2) 11–42 17.5 (11.8) 1–40 0.001*
Alcohol units in a month 4.8 (3.8) 0–15 2.6 (3.0) 0–12 0.010*
Cigarettes smoked daily 3.7 (5.6) 0–20 7.2 (6.3) 0–20 0.004*
  No (percent) No (percent)  
Educational level    
- Only primary school 32 (79) 45 (70) 0.079**
- Primary school and college 9 (21) 16 (25)  
- University 0 3 (5)  
Present smokers 7 (17) 32 (50) 0.001**
Years at this particular work    
-<10 0 20 (34)  
11–20 8 (18) 17 (26)  
21–30 13 (32) 18 (27)  
>30 20 (50) 7(13)  
  1. * Student's t-test** Chi-square test