Frequency Tables
 

[Q1] 【For all respondents】Did you experience any mental tiredness / energy slump at work before? (If yes, interviewers to probe frequency)
   Frequency   Percentage 
  Yes --- very often  108   )   20.9%   ) 
  Yes --- quite often  71   )   13.7%   ) 
  Yes --- sometimes  242   )   47.0%   ) 
  Yes --- seldom  58   ) 479   11.2%   ) 92.8% 
  Never  37      7.2%    
  Total  515      100.0%    
  Base  515          
  Missing case(s)  0          

[Q2] 【Only for those who answered "Yes" in Q1】Generally speaking, during which period of the day would you experience such tiredness most often?
   Frequency   % of sub-sample (Base = 479)   % of total sample (Base = 515) 
  Morning  46     9.6%     8.9%   
  After lunch  57   11.9%   11.1% 
  Afternoon  172  ) 229   35.9%  ) 47.8%   33.4%  ) 44.5% 
  Before getting off duty  75     15.7%     14.6%   
  Overtime / At night  93     19.4%     18.1%   
  All day long  10     2.1%     1.9%   
  Others  5     1.0%     1.0%   
  Don't know / Hard to say  16     3.3%     3.10%   
  Total  474     100.0%        
  Base  479             
  Missing case(s)  5             

[Q3] 【Only for those who answered "Yes" in Q1】What do you feel when you are mentally tired at work? How do you describe your feeling? (Interviewer do not read out the answers, multiple answers allowed)
   Frequency   % of total responses (Base = 697)   % of sub-sample (Base = 479)   % of total sample (Base = 515) 
  Sleepiness (e.g. yawning)  240   34.4%   50.1%   46.6% 
  Difficult to concentrate  103   14.8%   21.5%   20.0% 
  Headache / Dizziness  79   11.3%   16.5%   15.3% 
  Muscle pain and tiredness  72   10.3%   15.0%   14.0% 
  Having trouble to function properly  40   5.7%   8.4%   7.8% 
  Become emotional / bad-tempered  32   4.6%   6.7%   6.2% 
  Feeling stressed  30   4.3%   6.3%   5.8% 
  Eye fatigue / pain / dry  24   3.4%   5.0%   4.7% 
  Lower productivity  12   1.8%   2.5%   2.3% 
  Easy to forget things  12   1.7%   2.5%   2.3% 
  Not feeling well all over  8   1.2%   1.7%   1.6% 
  Others  28   4.0%   5.8%   5.4% 
  Don't know / Hard to say  16   2.4%   3.3%   3.1% 
  Total  697   100.0%       
  Base  479           
  Missing case(s)  10           

[Q4] 【Only for those who answered "Yes" in Q1】Generally speaking, how long does such mental tiredness last each time?
   Frequency   % of sub-sample (Base = 479)   % of total sample (Base = 515) 
  1-15 minutes  106   22.1%   20.6% 
  16-30 minutes  101   21.1%   19.6% 
  31-60 minutes  52  ) 259   10.9%  ) 54.1%   10.1%  ) 50.3% 
  1 hour 1 minute-2 hours  65     13.6%     12.6%   
  2 hour 1 minute-3 hours  34     7.1%     6.6%   
  3 hour 1 minute-4 hours  23     4.8%     4.5%   
  More than 4 hours  28     5.8%     5.4%   
  Don't know / Don't remember  65     13.6%     12.6%   
  Total  474     100.0%        
  Mean  1 hour 53 minutes             
  Standard error  11 minutes             
  Median  30 minutes             
  Base  479             
  Missing case(s)  5             

[Q5] 【Only for those who answered "Yes" in Q1】Do you think such mental tiredness has a negative impact on your overall work performance? (If yes, interviewers to probe degree of seriousness)
   Frequency   % of sub-sample (Base = 479)   % of total sample (Base = 515) 
  Yes --- Very serious  9   1.9%   1.7% 
  Yes --- Quite serious  109   22.8%   21.2% 
  Yes --- Not quite serious  191   39.9%   37.1% 
  Yes --- Not serious at all  69  ) 378   14.4%  ) 78.9%   13.4%  ) 73.4% 
  No  95     19.8%     18.4%   
  Don't know / Hard to say  6     1.3%     1.2%   
  Total  478     100.0%        
  Base  479             
  Missing case(s)  1             

[Q6] 【Only for those who answered "Yes" in Q1】What would you usually do when you experience mental tiredness at work, in order to boost your mental energy? (Interviewers do not read out the answers, multiple answers allowed)
   Frequency   % of total responses (Base = 774)   % of sub-sample (Base = 479)   % of total sample (Base = 515) 
  Have a drink  226   29.2%   47.2%   43.9% 
  Take a walk outside the office  162   21.0%   33.8%   31.5% 
  Wash face / Go to the washroom  80   10.3%   16.7%   15.5% 
  Take a nap  70   9.0%   14.6%   13.6% 
  Have some snacks  64   8.2%   13.4%   12.4% 
  Do some exercises  41   5.3%   8.6%   8.0% 
  Chat with colleagues / Make a phone call  37   4.7%   7.7%   7.2% 
  Listen to some music / Watch TV  16   2.0%   3.3%   3.1% 
  Smoke a cigarette  12   1.6%   2.5%   2.3% 
  Look at the scenery outside the window  8   1.0%   1.7%   1.6% 
  Browse the Internet  3   0.4%   0.6%   0.6% 
  Others  14   1.8%   2.9%   2.7% 
  Do nothing  39   5.1%   8.1%   7.6% 
  Don't know/ Hard to say  2   0.3%   0.4%   0.4% 
  Total  774   100.0%       
  Base  479           
  Missing case(s)  1           

[Q7] 【For all respondents】Then, what would you do to further boost your mental energy even if you are not experiencing any mental tiredness at work? (Interviewers do not read out the answers, multiple answers allowed)
   Frequency   % of total responses (Base = 580)   % of total sample (Base = 515) 
  Have a drink  112   19.3%   21.7% 
  Wash face  70   12.0%   13.6% 
  Do some exercises  60   10.3%   11.7% 
  Have some snacks  54   9.3%   10.5% 
  Take a nap  31   5.4%   6.0% 
  Chat with colleagues / Make a phone call  23   4.0%   4.5% 
  Take a walk outside the office  23   3.9%   4.5% 
  Listen to some music / Watch TV  19   3.3%   3.7% 
  Smoke a cigarette  13   2.2%   2.5% 
  Browse the Internet / Play online games  6   1.1%   1.2% 
  Look at the scenery outside the window  4   0.6%   0.8% 
  Others  21   3.5%   4.1% 
  Do nothing  114   19.6%   22.1% 
  Don't know/ Hard to say  32   5.5%   6.2% 
  Total  580   100.0%    
  Base  515       
  Missing case(s)  4       

[Q8] 【For all respondents】 Have you ever consumed any snacks to recharge yourself at work? (If yes, interviewer to ask "How often do you consume snacks to recharge yourself at work?")
   Frequency   Percentage 
  Yes --- very often  57   )   11.1%   ) 
  Yes --- quite often  31   )   6.1%   ) 
  Yes --- sometimes  144   )   28.0%   ) 
  Yes --- seldom  100   ) 332   19.4%   ) 64.6% 
  Never  179      34.8%    
  Don't know / Hard to say  3      0.6%    
  Total  515      100.0%    
  Base  515          
  Missing case(s)  0          

[Q9] 【Only for those who answered "yes" in Q8】What would you usually eat then? (Interviewers do not read out the answers, multiple answers allowed)
   Frequency   % of total responses (Base = 533)   % of sub-sample (Base = 332)   % of total sample (Base = 515) 
  Biscuits  158   29.7%   47.6%   30.7% 
  Candies  131   24.5%   39.5%   25.4% 
  Chewing gum  64   12.0%   19.3%   12.4% 
  Chocolate  62   11.6%   18.7%   12.0% 
  Potato chips  26   4.8%   7.8%   5.0% 
  Preserved plum / Beef jerk / Pork jerk  21   4.0%   6.3%   4.1% 
  Fruits  18   3.4%   5.4%   3.5% 
  Toasts / Sandwiches  15   2.8%   4.5%   2.9% 
  Chicken wings  6   1.1%   1.8%   1.2% 
  French fries  4   0.8%   1.2%   0.8% 
  Others  19   3.5%   5.7%   3.7% 
  Don't know/ Hard to say  10   1.9%   3.0%   1.9% 
  Total  533          
  Base  332           
  Missing case(s)  1           

[Q10] 【For all respondents】 Have you ever consumed any drinks to recharge yourself at work? (If yes, interviewer to ask "How often do you consume drinks to recharge yourself at work?")
   Frequency   Percentage 
  Yes --- very often  126   )   24.4%   ) 
  Yes --- quite often  48   )   9.3%   ) 
  Yes --- sometimes  172   )   33.4%   ) 
  Yes --- seldom  71   ) 417   13.7%   ) 80.8% 
  Never  95      18.5%    
  Don't know / Hard to say  3      0.7%    
  Total  515      100.0%    
  Base  515          
  Missing case(s)  0          

[Q11] 【Only for those who answered "yes" in Q10】What would you usually drink then? (Interviewers do not read out the answers, multiple answers allowed)
   Frequency   % of total responses (Base = 583)   % of sub-sample (Base = 417)   % of total sample (Base = 515) 
  Tea (all kinds)  195   33.4%   46.8%   37.9% 
  Water  151   25.9%   36.2%   29.3% 
  Coffee  138   23.7%   33.1%   26.8% 
  Soft drink  52   8.9%   12.5%   10.1% 
  Juice  25   4.3%   6.0%   4.9% 
  Energy drink  9   1.5%   2.2%   1.7% 
  Ovaltine / Horlicks  4   0.7%   1.0%   0.8% 
  Essence of chicken  2   0.4%   0.5%   0.4% 
  Milk  2   0.3%   0.5%   0.4% 
  Others  4   0.8%   1.0%   0.8% 
  Don't know/ Hard to say  1   0.1%   0.2%   0.2% 
  Total  583   100.0%       
  Base  417           
  Missing case(s)  2           

[Q12] 【For all respondents】Do you know what substances in our food are essential for maintaining our normal mental energy? (Interviewers do not read out the answers, multiple answers allowed)
   Frequency   % of total responses (Base = 549)   % of total sample (Base = 515) 
  Caffeine  219   39.8%   42.5% 
  Glucose  20   3.7%   3.9% 
  Carbohydrates  12   2.1%   2.3% 
  Substances in tea  10   1.9%   1.9% 
  Vitamins  7   1.3%   1.4% 
  Sugar  5   1.0%   1.0% 
  Protein  2   0.3%   0.4% 
  Others  28   5.2%   5.4% 
  Don't know / Hard to say  246   44.8%   47.8% 
  Total  549   100.0%    
  Base  515       
  Missing case(s)  10       

[Q13] 【For all respondents】 Do you know the main functions of glucose to our brain and bodies? (Interviewers do not read out the answers, multiple answers allowed)
   Frequency   % of total responses (Base = 546)   % of total sample (Base = 515) 
  Recuperate body energy after exercise  114   20.8%   22.1% 
  Provide energy source for all brain functions  82   14.9%   15.9% 
  Body building and maintenance  37   6.8%   7.2% 
  Nutritional supplements for hospitalized patients  17   3.1%   3.3% 
  Provide sugars / blood glucose  14   2.6%   2.7% 
  Others  12   2.1%   2.3% 
  Don't know / Hard to say  270   49.5%   52.4% 
  Total  546   100.0%    
  Base  515       
  Missing case(s)  2       


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