Table 2. Median and IQR of TBS and LS-VBMD and the Spearman Correlation Between TBS and LS-VBMD Stratified by Quintile of BMI, Trunk Lean Mass, and Trunk Fat Mass.

	TBS score median (IQR)	LS-VBMD median (IQR)	TBS versus LS-VBMD Spearman correlation (95% CI)
BMI quintile (kg/m2)
17.2–24.2	1.34 (1.28–1.39)	0.095 (0.073–0.120)	0.47 (0.41–0.53)
24.2–26.1	1.31 (1.25–1.37)	0.102 (0.080–0.127)	0.46 (0.40–0.53)
26.1–27.7	1.29 (1.23–1.36)	0.105 (0.086–0.129)	0.46 (0.40–0.52)
27.7–30.0	1.27 (1.19–1.34)	0.112 (0.088–0.136)	0.44 (0.38–0.50)
30.0–37.0	1.20 (1.10–1.27)	0.115 (0.091–0.142)	0.38 (0.32–0.45)
Trunk lean mass quintile (kg)
15.6–25.6	1.30 (1.24–1.37)	0.097 (0.075–0.123)	0.43 (0.37–0.49)
25.6–27.6	1.31 (1.24–1.37)	0.105 (0.084–0.129)	0.38 (0.31–0.44)
27.6–29.4	1.30 (1.23–1.36)	0.103 (0.083–0.129)	0.36 (0.29–0.43)
29.4–31.7	1.27 (1.18–1.34)	0.108 (0.087–0.133)	0.36 (0.30–0.43)
31.7–43.3	1.24 (1.15–1.32)	0.114 (0.090–0.139)	0.29 (0.22–0.36)
Trunk fat mass quintile (kg)
1.8–8.6	1.35 (1.29–1.40)	0.105 (0.082–0.133)	0.41 (0.35–0.48)
8.6–10.7	1.32 (1.26–1.37)	0.104 (0.082–0.130)	0.41 (0.35–0.48)
10.7–12.7	1.29 (1.22–1.35)	0.105 (0.082–0.128)	0.35 (0.29–0.42)
12.7–15.3	1.27 (1.19–1.33)	0.109 (0.085–0.133)	0.43 (0.36–0.49)
15.3–27.2	1.18 (1.10–1.26)	0.105 (0.086–0.130)	0.29 (0.23–0.36)

IQR=interquartile range; TBS =trabecular bone score; LS-VBMD=lumbar spine (trabecular) volumetric BMD.