Fig. 2.

Repeated-measures analysis of variance and post hoc tests comparing PSQI scores at 2 weeks, 4 weeks, and 3 months after treatment for different neuromodulation groups stratified by gender (A, B) and age (C, D). * P < 0.05, ** P < 0.01, *** P < 0.001, tDCS + rTMS group vs sham tDCS + rTMS group; ^# P < 0.05, ^## P < 0.01, ^### P < 0.001, tDCS + rTMS group vs tDCS + sham rTMS group; ^& P < 0.05, ^&& P < 0.01, ^&&& P < 0.001, sham tDCS + rTMS group vs tDCS + sham rTMS group; ns, no significant difference. PSQI, Pittsburgh Sleep Quality Index