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Table 2 Polysomnographic data of the patients with OSA

From: Can 6-minute walk test predict severity of obstructive sleep apnea syndrome?

Variable mean ± SDa Male Female Total P value
AHI b 53.27 ± 29.62 47.42 ± 18.78 51.53 ± 26.78 0.422
Desaturation index(DI) 56.02 ± 25.95 63.9 ± 26.71 55.39 ± 25.91 0.804
PaCo2 c 51.28 ± 5.35 46.46 ± 7.53 49.72 ± 6.46 0.025*
Time spent < 90% d 110.21 ± 97.25 138.95 ± 98.81 118.77 ± 97.54 0.391
Severe OSAe 24(72.7%) 12(85.7%) 36(76.7%) 0.464
Moderate OSA 9(27.3%) 2(14.3%) 11(23.4%)
  1. Abbreviations: a SD: Standard deviation, b AHI: Apnea hypopnea index, c PaCo 2 : Partial pressure of carbon dioxide in atrial blood, d Time spent < 90% (%): Time (minute) spent during sleep with O 2 saturation < 90%,e OSA: Obstructive sleep apnea
  2. * Significant P value