Association between total cholesterol and lumbar bone density in Chinese: a study of physical examination data from 2018 to 2023

Table 4 Serum TC and lumbar BMD were subgroup analyzed and stratified by age and BMI.

Subgroup analysis	β (95% CI)	P value	P for interaction
Male
Age, year			<0.001 ^***
Age < 45	3.466 (0.039, 6.893)	0.047^*
Age ≥ 45	3.681 (1.219, 6.144)	0.003^**
BMI (kg/m²)			<0.001 ^***
< 24	3.525 (-0.709, 7.759)	0.102
≥ 24,<28	5.270 (2.692, 7.848)	<0.001 ^***
≥ 28	2.004 (-1.692, 5.700)	0.288
Female
Age, year			<0.001 ^***
Age < 45	-4.122 (-11.706, 3.462)	0.288
Age ≥ 45	-5.076 (-8.621, -1.531)	0.005^**
BMI (kg/m²)			0.160
< 24	-0.709 (-4.499, 3.081)	0.714
≥ 24,<28	-0.091 (-4.345, 4.164)	0.967
≥ 28	-1.780 (-9.676, 6.116)	0.658

Each stratification was adjusted for all factors (age, nationality, marital status, DBP, SBP, BMI, HDL-C, TG, LDL-C, total protein, total bilirubin, serum phosphorus, serum calcium, serum potassium, alkaline phosphatase, ALT, AST, glycosylated hemoglobin, and FBG), except for the stratification factor itself.
*P < 0.05, **P < 0.01, ***P < 0.001

ISSN: 1476-511X