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Table 4 Daily frequency of cleaning activities associated with manipulation or presence of flour dust

From: Exposure of bakery and pastry apprentices to airborne flour dust using PM2.5 and PM10personal samplers

  

Bakery apprentices

Pastry apprentices

Volunteers

  

First year

Second year

First year

Second year

Bakery apprentices

Pastry apprentices

  

(n = 38)a

(n = 90)a

(n = 50)a

(n = 108)a

(n = 21)a

(n = 13)a

  

(max = 37)b

(max = 85)b

(max = 49)b

(max = 100)b

(max = 21)b

(max = 12)b

  

(min = 34)c

(min = 64)c

(min = 47)c

(min = 74)c

(min = 19)c

(min = 10)c

Cleaning of tables for bread and pastry production

0 per day

2.8*

3.6

4.1

1.0

4.8

0.0

 

[1 – 3]

69.4

72.6

37.5

39.0

71.4

33.3

 

[4 – 5]

16.7

14.3

27.1

13.0

14.3

0.0

 

[6–40]

11.1

9.5

31.3

47.0

9.5

66.7

Cleaning floor

0 per day

10.8

8.2

6.1

4.1

5.3

9.1

 

1

78.4

78.8

87.8

85.7

84.2

72.7

 

[2 – 6]

10.8

13.0

6.1

10.2

10.5

18.2

Cleaning oven (sweeping of burned dust)

0 per day

27.8

18.7

77.3

75.6

21.1

90.0

 

1

47.2

46.7

15.9

18.0

36.8

0.0

 

[2 – 5]

19.4

29.3

6.8

5.1

42.1

0.0

 

[6 – 15]

5.6

5.3

0.0

1.3

0.0

10.0

  1. a: numbers apprentices by level, b: maximum number of respondents for the set of questions, c: minimum number of respondents for the set of questions. * In % of respondents.