Table 3.
Univariate predictors of Loge(AHI)
| DXA measurements, % | Men |
Women |
||||
|---|---|---|---|---|---|---|
| r2 | β (95% CI) | P value | r2 | β (95% CI) | P value | |
| Neck region | ||||||
| Fat | 0.06 | 0.96 (−0.01, 1.93) | NS | 0.25 | 2.51 (1.01, 4.00) | 0.002 |
| Lean | 0.02 | −0.36 (−1.10, 0.38) | NS | < 0.01 | 0.04 (−1.63, 1.71) | NS |
| Thoracic mass | ||||||
| Fat | 0.15 | 0.12 (0.05, 0.19) | 0.001 | 0.24 | 0.18 (0.07, 0.29) | 0.003 |
| Lean | 0.04 | −0.09 (−0.20, 0.03) | NS | < 0.01 | 0.01 (−0.17, 0.18) | NS |
| Abdominal mass | ||||||
| Fat | 0.16 | 0.14 (0.06, 0.23) | 0.001 | 0.17 | 0.21 (0.05, 0.37) | 0.01 |
| Lean | 0.09 | −0.17 (−0.32, −0.03) | 0.02 | 0.02 | −0.13 (−0.46, 0.20) | NS |
| Android mass | ||||||
| Fat | 0.14 | 0.31 (0.11, 0.52) | 0.003 | 0.26 | 0.63 (0.27, 0.99) | 0.001 |
| Lean | 0.11 | −0.65 (−1.14, −0.16) | 0.01 | 0.01 | 0.29 (−0.63, 1.20) | NS |
| Trunk mass | ||||||
| Fat | 0.15 | 0.07 (0.03, 0.11) | 0.002 | 0.16 | 0.11 (0.02, 0.19) | 0.02 |
| Lean | 0.12 | 0.11 (−0.18, −0.03) | 0.006 | 0.03 | −0.07 (−0.20, 0.07) | NS |
| Gynoid mass | ||||||
| Fat | 0.04 | 0.13 (−0.04, 0.31) | NS | < 0.01 | 0.02 (−0.25, 0.29) | NS |
| Lean | 0.10 | −0.27 (−0.48, −0.05) | 0.02 | 0.12 | −0.44 (−0.84, −0.04) | 0.04 |
| Total body mass | ||||||
| Fat, % | 0.12 | 0.04 (0.01, 0.07) | 0.006 | 0.16 | 0.08 (0.02, 0.14) | 0.02 |
| Lean, % | 0.12 | −0.05 (−0.08, −0.01) | 0.007 | 0.13 | −0.08 (−0.15, −0.01) | 0.03 |
| BMD, g/cm2 | 0.10 | 2.41 (0.49, 4.33) | 0.02 | 0.05 | 2.29 (−1.07, 5.65) | NS |
| PCR | 0.13 | −1.54 (−2.56, −0.51) | 0.004 | 0.04 | −1.24 (−3.20, 0.72) | NS |
| Anthropometric measures | ||||||
| BMI, kg/m2 | 0.11 | 0.05 (0.01, 0.09) | 0.01 | 0.21 | 0.06 (0.02, 0.10) | 0.005 |
| Neck circumference, cm | 0.17 | 0.08 (0.04, 0.13) | 0.001 | 0.10 | 0.10 (0.02, 0.19) | 0.02 |
| Waist circumference, cm | 0.16 | 0.10 (0.02, 0.19) | 0.02 | 0.19 | 0.03 (0.01, 0.04) | 0.008 |
| Weight, kg | 0.17 | 0.02 (0.01, 0.03) | 0.001 | 0.14 | 0.02 (0.01, 0.03) | 0.03 |
| WHR | 0.05 | 2.24 (−0.45, 4.92) | NS | 0.13 | 5.00 (0.53, 9.47) | 0.03 |
| NWR | < 0.01 | −2.06 (−9.67, 5.56) | NS | 0.11 | −9.4 (−18.35, −0.47) | 0.04 |
| Age, y | < 0.01 | 0.01 (−0.01, 0.02) | NS | < 0.01 | 0.01 (−0.02, 0.03) | NS |
| FVC, L | 0.03 | 0.17 (−0.11, 0.44) | NS | 0.04 | −0.28 (−0.85, 0.29) | NS |
| ESS, score | 0.16 | 0.07 (0.03, 0.11) | 0.001 | < 0.01 | 0.01 (−0.06, 0.07) | NS |
| Narrow airwaya | 0.05 | 0.37 (−0.06, 0.79) | NS | 0.12 | 0.79 (0.03, 1.56) | 0.05 |
| Mallampati scoreb | 0.04 | 0.08 | ||||
| II | −0.57 (−1.36, 0.23) | NS | 0.40 (−0.62, 1.43) | NS | ||
| III | −0.43 (−1.24, 0.38) | NS | 0.61 (−0.39, 1.60) | NS | ||
| IV | −0.40 (−1.22, 0.43) | NS | 0.96 (−0.29, 2.21) | NS | ||
AHI refers to apnea-hypopnea index; DXA, dual-energy absorptiometry; CI, confidence interval; Fat %, (fat (g)/total body mass (g)) × 100; Lean %, (lean mass (g)/total body mass (g)) × 100; PCR, peripheral central ratio of fat, i.e., (fat in the total body – fat in the trunk)/fat in the trunk × 100; NS, not significant at a P value of 0.05; ESS, Epworth Sleepiness Scale; BMD, bone mineral density; WHR, waist-to-hip ratio; NWR, neck-to-waist ratio
a
Pharyngeal grade III or IV (reference category = pharyngeal grade I or II)
b
The reference category for the Mallampati score is I.