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Table 1 Median FeNO levels (ppb) in relation to upper respiratory symptoms (URS) in the previous two weeks

From: Exhaled nitric oxide and urinary EPX levels in infants: a pilot study

  N Median Range IQR
Infants with URS 10 7.0 2-37 5.4
Infants without URS 88 15.0 2-47 8.6
Infants, all 98 14.4 2-47 9.4
Mothers with URS 12 13.0 5-59 9.0
Mothers without URS 92 9.0 5-67 9.0
Mothers, all 104 9.0 5-67 9.0