Table 5 Multiple variables multivariate covariance analysis (MANCOVA) on BUA and SoS (n = 150).

From: Obstructive sleep apnoea syndrome (OSAS) as a risk factor for secondary osteoporosis in children

Main factors

BUA

SOS

Adjusted mean (SE)

Adjusted mean difference (lower CI, upper CI)

Adjusted mean (SE)

Adjusted mean difference (lower CI, upper CI)

Control

113.83 (2.24)

4.15 (− 2.45, 10.75)

1557.28 (4.12)

17.79 (5.67, 29.90)**

OSA

109.68 (1.85)

 

1539.50 (3.39)

 

Other factors

Adjusted B (SE)

Adjusted B (lower CI, upper CI)

Adjusted B (SE)

Adjusted B (lower CI, upper CI)

Age

1.72 (0.59)

1.72 (0.55, 2.90) **

2.83 (1.09)

2.83 (0.67, 4.98) *

BMI

2.99 (1.11)

2.99 (0.81, 5.17) **

− 0.72 (2.03)

− 0.72 (− 4.73, 3.29)

Vitamin D level

− 0.15 (0.11)

− 0.15 (− 0.37, 0.07)

− 0.39 (0.20)

− 0.39 (− 0.78, 0.01)

Alkaline phosphatase

− 0.02 (0.02)

− 0.02 (− 0.07, 0.02)

0.04 (0.04)

0.04 (− 0.04, 0.12)

Dietary calcium intake

2.39 (1.01)

2.39 (0.88, 4.55)

1.55 (1.45)

1.55 (0.35, 2.68)

Physical activity

1.33 (0.68)

1.33 (0.45, 3.45)

2.35 (1.23)

2.35 (0.65, 3.45)

  1. Adjusted R2 for BUA = 0.107; adjusted R2 = for SOS = 0.153.
  2. SE standard error, B regression coefficient, CI confidence interval.
  3. *p < 0.05.
  4. **p < 0.01.