Table 2. Comparisons of fluid volume change between OSA and non-OSA subjects.
| Characteristics | OSA | non-OSA | Z | P |
|---|---|---|---|---|
| Change in weight (kg) | −0.250 (−0.175, −0.325) | −0.200 (−0.200, −0.100) | 1.829 | 0.079 |
| Change in BMI (kg/m2) | −0.010 (0.000, −0.020) | −0.010 (−0.010, −0.000) | 1.148 | 0.279 |
| Change in NC (cm) | +0.600 (0.200, 1.225) | +0.250 (−0.100, 0.325) | −2.825 | 0.004 |
| Δ left arm (mL) | +79.50 (−19.65, 161.55) | +0.000 (−148.50, 78.53) | −0.794 | 0.443 |
| Δ right arm (mL) | +80.25 (−19.45, 155.75) | +67.25 (−78.18, 97.18) | −1.140 | 0.265 |
| Δ trunk (mL) | +79.65 (0.000, 156.00) | +0.000 (−78.20, 96.80) | −1.665 | 0.097 |
| Δ left leg (mL) | −160.50 (−252.83, −77.80) | −80.45 (−181.50, 109.75) | 2.184 | 0.029 |
| Δ right leg (mL) | −272.35 (334.20, −214.23) | −136.50 (−164.50, 0.000) | 3.928 | <0.001 |
| Δ head and neck (mL)# | +241.20 (138.65, 346.90) | +64.70 (−171.75, 302.60) | −1.614 | 0.111 |
OSA, obstructive sleep apnea; BMI, body mass index; NC, neck circumference. Δ fluid shift volume: +, increase fluid volume; −, decrease fluid volume; #, calculation of Δ head and neck: Δ left leg + Δ right leg − Δ left arm − Δ right arm − Δ trunk.