Multiple Linear Regression Models predicting overall RT in primary insomnia patients.

Note: RT = reaction time; BDI = Beck Depression Inventory-I; SAI = State Anxiety Inventory; MSLT = multiple sleep latency test.Model 1: unadjusted;Model 2: adjusted for gender, age and education years;Model 3: adjusted for gender, age, education years, BDI and TAI;Model 4: adjusted for gender, age, education years, BDI, TAI, sleep latency, total sleep time and sleep efficiency.