Table 3 Threshold effect analysis of total cholesterol on total bone mineral density in other race (including Hispanic and Multi-Racial) using the two-piecewise linear regression model
Total bone mineral density | Adjusted β (95% CI) P value |
|---|---|
Other races | |
Fitting by the standard linear model | − 0.0049 (− 0.0087, − 0.0010) 0.0136 |
Fitting by the two-piecewise linear model | |
Inflection point | 6.7 |
Serum cholesterol < 6.7 mmol/L | − 0.0064 (− 0.0105, − 0.0023) 0.0021 |
Serum cholesterol > 6.7 mmol/L | 0.0121 (− 0.0029, 0.0272) 0.1149 |
Log likelihood ratio | 0.022 |