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Thorax 53:881-883 doi:10.1136/thx.53.10.881
  • Short paper

Endogenous nitric oxide in patients with stable COPD: correlates with severity of disease

Table 1

Peak and plateau levels of expired nitric oxide (PNO and PLNO) in the study population and controls

Mean (SD) Mean differences
vs controls
95% Confidence intervals
+
PNO (ppb)
Group 1 22.33  (12.62) −1.91 9.12 −12.95
 Group 2 19.97 (14.81) −4.27 8.02 −16.56
 Group 3 27.56 (13.95) 3.32 13.96 −7.33
 Controls 24.24 (9.09)
PLNO (ppb)
Group 1 5.53 (2.93)1-150 −3.92 −0.73 −6.40
 Group 2 5.75 (3.52)1-150 −3.71 −0.20 −6.49
 Group 3 7.07 (2.75) −2.39 0.44 −4.50
 Controls 9.46 (2.79)
  • PLNO: general effect of one way ANOVA, F (3.66) = 4.9 (p<0.01).

  • 1-150 Significant post hoc difference at p<0.05 levels (groups 1 and 2 versus group 3 and control).

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