Table 3 Age-specific association between sleep duration and trabecular bone score (TBS).

From: Association of short sleep duration and trabecular bone score

Sleep durationa

Unadjusted model

Totally adjusted model

Age < 60

Age≧ 60

Age < 60

Age≧ 60

βb (95% CI)

P value

βb (95% CI)

P value

βb (95% CI)

P value

βb (95% CI)

P value

≦5 h

− 0.021 (− 0.033, − 0.009)

0.001*

− 0.043 (− 0.065, − 0.021)

 < 0.001***

− 0.013 (− 0.029, 0.003)

0.115

− 0.054 (− 0.092, − 0.016)

0.006**

6 h

− 0.012 (− 0.023, − 0.001)

0.038*

− 0.014 (− 0.032, 0.005)

0.143

− 0.007 (− 0.022, 0.008)

0.373

0.008 (− 0.024, 0.040)

0.634

7 h

Reference

Reference

Reference

Reference

Reference

reference

reference

reference

8 h

0.008 (− 0.003, 0.019)

0.165

− 0.008 (− 0.025, 0.009)

0.341

0.010 (− 0.005, 0.025)

0.205

0.011 (− 0.017, 0.039)

0.442

≧9 h

− 0.001 (− 0.019, 0.017)

0.934

− 0.011 (− 0.034, 0.012)

0.363

0.006 (− 0.017, 0.029)

0.595

− 0.006 (− 0.043, 0.032)

0.756

  1. Adjusted for age, race/ethnicity, gender, fasting glucose, C reactive protein, smoke, coronary heart disease, cancer, snorting, total spine bone mineral density (BMD).
  2. CI confidence interval.
  3. aLength were the reference group.
  4. bβ coefficient can be interpreted as differences in the mean TBS comparing subjects in the other 4 groups of sleep duration to those in the 7-h sleep length.
  5. Asterisks indicate statistical significance: *P < 0.05, **P < 0.01, ***P < 0.001.
Back to article page