Table 4.

Two-level linear regression model analysis results of Lichen planopilaris activity index.

Characteristics	Regression coefficients	Standard error	95% CI	P-value
Intervention control trial	0.125	0.288	−0.439, 0.638	0.664
Time	−0.193	0.042	−0.276, −0.109	<0.001
Baseline LPPAI	0.239	0.085	0.071, 1.861	0.005