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Table 6 Mean FeNO level according to workstation (inside vs. outside greenhouse) and farm among the female flower farm workers

From: Respiratory symptoms, fractional exhaled nitric oxide & endotoxin exposure among female flower farm workers in Ethiopia

Farm ID

Workstation

N

AM

Range

Ns > 50 ppb

GM

GSD

Farm I

IGH

26

16.5

 

0

15.3

1.47

OGH

37

21.4

 

1

16.2

1.93

Totala

63

19.4

5-166

1

15.8*

1.75

Farm II

IGH

23

17.2

 

1

12.8

1.95

OGH

22

12.3

 

0

10.8

1.65

Totala

45

14.8

5-107

1

11.8*

1.82

Total

IGH

49

16.8

 

1

14.1

1.72

OGH

59

18.0

 

1

13.9

1.88

Total

108

17.5

5-166

2

13.9

1.81

  1. aIndependent t-test; *P < 0.01 when comparing Farm I and II; Ns: Number of samples; IGH: Inside Greenhouse; OGH: Outside Greenhouse (packhouse).