Table 2.

Direct effects of perfectionism dimensions, dysfunctional sleep-related cognition, and anxiety on insomnia symptoms

Predictor	B	β	BCa 95% CIs for B	Adjusted R2 (%)
Step 1				15.3
Age	.008	.016	− .025, .043
Sex	.671	.054	− .379, 1.633
Doubts about actions	.382	.273***	.235, .502
Organization	− .145	− .137**	− .245, − .054
Concern over mistakes	.013	.020	− .081, .111
Parental expectations	− .136	− .116*	− .264, − .027
Parental criticism	.277	.196**	.108, .475
Personal standards	.072	.065	− .047, .190
Step 2				35.4
Age	.024	.048	− .006, .056
Sex	− .072	− .006	− .959, .741
Doubts about actions	.219	.157***	.080, .342
Organization	− .088	− .083*	− .184, .003
Concern over mistakes	− .042	− .065	− .124, .038
Parental expectations	− .121	− .103*	− .224, − .029
Parental criticism	.248	.175**	.117, .398
Personal standards	.061	.056	− .051, .175
DBAS	1.460	.495***	1.225, 1.703
Step 3				40.8
Age	.027	.056	− 5.595, .056
Sex	− .335	− .027	− 1.151, .454
Doubts about actions	.046	.033	− .078, .164,
Organization	− .077	− .072*	− .169, .011
Concern over mistakes	− .088	− .136*	− .164, − .006
Parental expectations	− .093	− .079	− .192, − .004
Parental criticism	.252	.178***	.135, .389
Personal standards	.069	.063	− .033, .174
DBAS	1.258	.426***	.992, 1.528
HADS-A	.362	.312***	.258, .467

DBAS Dysfunctional Beliefs and Attitudes About Sleep Scale, HADS-A Anxiety, F-MPS Multidimensional Perfectionism Scale

*p < .05; **p < .005; ***p < .001