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

Table 2 Polysomnographic data of the patients with OSA

Variable mean ± SD^a	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 OSA^e	24(72.7%)	12(85.7%)	36(76.7%)	0.464
Moderate OSA	9(27.3%)	2(14.3%)	11(23.4%)	0.464

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
* Significant P value

ISSN: 2398-2683