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. 2018 Nov 13;15(11):2544. doi: 10.3390/ijerph15112544

Table 3.

Estimated crude and adjusted percentage difference in fractional exhaled nitric oxide in relation to measures of current, self-reported symptoms among traditional and Justa stove users, rural Honduras.

n Crude Percent Difference in FeNO 95% CI n Adjusted Percent Difference in FeNO 95% CI
Age (years) 1 139 <0.1 (−0.2, 0.3) 136 0.1 (−0.2, 0.4)
Height (meters) 2 139 −3.79 (−39.51, 53.02) 136 −0.25 (−37.59, 59.44)
Cough 3
No 118 ref 115
Yes 21 78.8 (38.8, 130.2) 21 78.8 (37.5, 132.5)
Chest Tightness 3
No 128 ref 125
Yes 11 17.6 (−17.9, 68.3) 11 24.5 (−14.5, 81.5)
Mucus 3
No 121 ref 118
Yes 18 47.4 (11.2, 95.3) 18 52.4 (13.4, 104.8)
Difficulty Breathing 3
No 129 ref 126
Yes 10 42.1 (−2.0, 105.9) 10 39.4 (−5.1, 104.8)

Cl: Confidence interval; PM2.5: fine particulate matter. 1 Model was adjusted for height, waist-to-hip ratio, body mass index, dietary-diversity score, years of education (<6 or ≥6 years), and number of assets (<2 or ≥2) (Assets include cars, bikes, motorbikes, televisions, radios, refrigerators, sewing machines, electricity). 2 Model was adjusted for age, waist-to-hip ratio, body mass index, dietary-diversity score, years of education (<6 or ≥6 years), and number of assets (<2 or ≥2) (Assets include cars, bikes, motorbikes, televisions, radios, refrigerators, sewing machines, electricity). 3 Exhaled nitric oxide was log-transformed. Categorical variable beta coefficients were entered into the formula (e^β − 1)*100). The estimates for the categorical measures of exposure can be interpreted as the percent difference in FeNO when comparing those who had the health system to those who did not.