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. 2013 May 12;2013:421763. doi: 10.1155/2013/421763

Table 3.

Correlation coefficients between neutrophil reactive oxygen species and polysomnographic parameters in obstructive sleep apnea patients.

Variable r P
Apnea/hypopnea index (events/h) 0.429 0.003
Arousal index (events/h) 0.502 <0.001
Oxygen desaturation index (events/h) 0.295 0.047
Average SpO2 (%) −0.310 0.036
Total sleep time SpO2 < 90% (%) 0.337 0.022

Spearman's rho coefficient. Statistically significant differences are bolded.