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Table 1 Questionnaire Items, Items in the Formula and Assigned Scores

From: Relationship between cumulative exposure to pesticides and sleep disorders among greenhouse vegetable farmers

Questionnaire Item Options and Scores Frequency Percentage (%) Items in the Formula
Are you using mixed pesticides? Never used mixing = 0 265 19.40 mixing status
Less than 50% times = 3 396 28.99
More than 50% times = 9 599 43.85
Missing 106 7.76
What is the way you spray pesticides? Hand spray = 8 1112 81.41 application method
Machine Spray = 1 113 8.27
Mix spray = 4 24 1.76
Missing 117 8.57
In the process of spraying, do you have the following behavior? Drink water = 3 77 5.64 behavior in spray
Eating = 3 26 1.90
Smoking = 2 51 3.73
Chat = 1 444 32.50
None = 0 672 49.19
Missing 96 7.03
What are the protective measures you use when using pesticides?a (Multiple choice) [41] PPE-0 = 1 482 35.29 PPE
PPE-1 = 0.8 183 13.40
PPE-2 = 0.7 370 27.09
PPE-3 = 0.6 7 0.51
PPE-1 & PPE-2 = 0.5 219 16.03
PPE-1 & PPE-3 = 0.4 0 0.00
PPE-2 & PPE-3 = 0.3 6 0.44
PPE-1 & PPE-2 & PPE-3 = 0.1 0 0.00
Missing 99 7.25
Question 1: After spraying pesticide, when do you usually clean or change into clean clothes?
Question 2: What time do you have to take a shower after spraying pesticides?
Question 3: What time do you wash your hands after spraying pesticide?
Question 1: Hyg [36]
Immediately = 1 745 54.54
Change the clothes that day = 2 364 26.65
Do not change clothes never = 3 156 11.42
Missing 101 7.39
Question 2   
Immediately = 1 472 34.55
The same day = 2 584 42.75
Not in the same day = 3 187 13.69
Missing 123 9.00
Question 3   
Immediately = 1 472 34.55
The same day = 2 584 42.75
Not in the same day = 3 187 13.69
Mssing 123 9.00
How many years did you work in vegetable greenhouse? 1–2 years = 1 558 40.85 Years
2–5 years = 2 154 11.27
5–10 years = 3 274 20.06
10–20 years = 4 301 22.04
> 20 years = 5 79 5.78
What is the area of your greenhouse?b < 1 MUc = 1 23 1.68 Areas
1–2 MU = 2 378 27.67
2–5 MU = 3 462 33.82
5–10 MU = 4 403 29.50
> 10 MU = 5 100 7.32
  1. Note: a. Options were either none, masks, protective suit, protective goggles, protective gloves, or protective rubber shoes; If ‘None’ was selected, then, the assigned score was PPE-0. If one or more of these options (masks, goggles, fiber or leather gloves, old clothes) was chosen, then assign PPE-1; If one or more of these options were used along with gas masks, rubber boots, or clean protective clothing; then assign PPE-2; If rubber gloves were used, then assign PPE-3 [41]
  2. b. If participants did not know the greenhouse planting area, then the following question was asked: “Do you remember the width and length of the planting area?” Then, the areas were calculated using the formula width*length
  3. c. China area measurement unit, 1 MU = 666.6667 m2