Table 5. Concurrent hierarchical linear regression analyses with insomnia symptoms as the dependent variable, and age, sex, parental criticism, anxiety and depression as predictors at baseline.

Predictors in the model	R2	β	t	Sig.
Step 1
Age	.01	.08	0.72	.47
Step 2
Age	.01	.08	0.73	.47
Sex		.06	0.55	.59
Step 3
Age	.10	.07	0.63	.53
Sex		.11	0.94	.35
Parental Criticism		.30	2.68	.01**
Step 2
Age	.28	.05	0.51	.61
Sex		-.01	-0.06	.95
Parental Criticism		.13	1.16	.25
Anxiety		.47	4.23	.01**
Step 3
Age	.36	.02	0.22	.83
Sex		.05	0.45	.67
Parental Criticism		.08	0.79	.43
Anxiety		.25	1.95	.05*
Depression		.36	2.83	.01**

Notes

*Significant for p-level < .05.

** Significant for p-level < .01.