Table 4.

Multiple Linear Regressions results in the whole sample.

Whole sample	Age	Depression	Anxiety state	Anxiety trait	Trauma tot	IRI	Total model
PSQI total	β = 0.167 p < 0.001 VIF = 1.022	β = 0.270 p < 0.001 VIF = 2.998	β = 0.119 p = 0.037 VIF = 2.045	β = 0.068 p = 0.334VIF = 3.859	β = 0.225 p < 0.001 VIF =2.045	β = −0.001 p = 0.968VIF = 1.117	F1, 532 = 4.367, p = 0.037, r = 0.563, r2 = 0.317
Latency	β = −0.171 p = 0.104 VIF = 1.000	β = 0.037 p = 0.550VIF = 1.991	β = −0.022 p = 0.694 VIF = 1.680	β = −0.031 p = 0.585VIF = 1.728	β = 0.108 p = 0.013 VIF = 1.000	β = 0.191 p = −0.060VIF = 1.108	F1, 524 = 6.193, p = 0.013, r = 0.130, r2 = 0.017
Duration	β = −0.292 p < 0.001 VIF = 1.014	β = −0.135 p = 0.032 VIF = 2.412	β = −0.148 p = 0.019 VIF = 2.412	β = 0.034 p = 0.669VIF = 3.842	β = 0.005 p = 0.932 VIF = 2.045	β = 0.017 p = 0.683VIF = 1.100	F1, 533 = 4.642, p = 0.032, r = 0.371, r2 = 0.138
Efficiency	β = −0.129 p = 0.002 VIF = 1.012	β = −0.206 p < 0.001 VIF = 1.012	β = −0.082 p = 0.211 VIF = 2.412	β = −0.098 p = 0.167VIF = 2.842	β = 0.036 p = 0.542 VIF = 1.962	β = 0.007 p = 0.882 VIF = 1.099	F1, 534 = 23.653, p < 0.001, r = 0.231, r2 = 0.053
ISI	β = 0.053 p = 0.118 VIF = 1.022	β = 0.282 p < 0.001 VIF = 2.995	β = 0.158 p = 0.001 VIF = 2.507	β = 0.088 p = 0.178VIF = 3.855	β = 0.275 p < 0.001 VIF = 2.045	β = 0.022 p = 0.538VIF = 1.117	F1, 533 = 8.991, p = 0.003, r = 0.639, r2 = 0.409

PSQI, Pittsburgh Sleep Quality Index; ISI, Insomnia Severity Index; VIF, variance inflation factor. Bold fonts indicates significant p values.