Table 3.

Comparison of the insomnia residual symptoms by subgroups of age and physical conditions at remission point (T₂ or T₃)

Mean (SD)	DIS	DMS	EMA	Daytime	MorRefr	Noticeable	Worry	QoS
Age: 18–34	0.88 (0.80)	0.99 (0.88)	0.90 (0.85)	1.04 (0.85)	2.19 (0.74)	0.75 (0.75)	0.61 (0.72)	1.35 (0.82)
35–49	0.85 (0.88)	1.11 (0.81)	0.98 (0.89)	1.12 (0.90)	2.14 (0.77)	0.79 (0.82)	0.61 (0.70)	1.50 (0.78)
50–59	0.94 (0.84)	1.18 (0.89)	1.02 (0.87)	0.99 (0.80)	2.31 (0.79)	0.61 (0.70)	0.58 (0.72)	1.41 (0.73)
60–94	0.93 (0.81)	1.11 (0.82)	1.07 (0.81)	0.83 (0.85)	2.55 (0.74)	0.49 (0.73)	0.47 (0.70)	1.24 (0.67)
ANOVA: F	0.26	0.75	0.62	2.12	5.74**	3.38*	0.93	2.28
Physical disease(s)
No	0.93 (0.80)	1.12 (0.85)	1.00 (0.85)	1.07 (0.85)	2.27 (0.79)	0.71 (0.78)	0.60 (0.73)	1.42 (0.76)
Yes	0.80 (0.94)	1.02 (0.82)	1.00 (0.87)	0.75 (0.84)	2.37 (0.70)	0.50 (0.70)	0.45 (0.62)	1.25 (0.73)
t-test: t	1.18	0.98	−0.03	3.12**	−1.06	2.26*	1.74	1.86
Mean (SD)	QoL	Fatigue	Cognition	Interpersonal	Mood	Activity	BDI-II
Age: 18–34	0.85 (0.72)	1.33 (0.90)	1.08 (0.89)	0.91 (0.92)	1.34 (0.89)	1.04 (0.71)	8.75 (8.05)
35–49	0.99 (0.84)	1.30 (0.95)	1.09 (0.94)	0.84 (0.82)	1.06 (0.99)	0.94 (0.93)	6.88 (7.10)
50–59	0.78 (0.68)	1.01 (0.77)	0.80 (0.85)	0.55 (0.72)	0.87 (0.76)	0.72 (0.71)	7.95 (8.71)
60–94	0.65 (0.69)	0.85 (0.81)	0.77 (0.92)	0.38 (0.70)	0.61 (0.72)	0.59 (0.80)	6.58 (5.80)
ANOVA: F	3.96**	6.94***	3.64*	9.45***	11.53***	5.63**	1.66
Physical disease(s)
No	0.87 (0.76)	1.17 (0.90)	0.99 (0.91)	0.70 (0.82)	0.97 (0.89)	0.83 (0.85)	7.85 (7.66)
Yes	0.67 (0.71)	0.94 (0.83)	0.75 (0.93)	0.57 (0.80)	0.92 (0.89)	0.76 (0.89)	5.97 (6.47)
t-test: t	2.26*	2.15*	2.20*	1.30	0.51	0.73	2.09*

*p < 0.5; **p < 0.01; ***p < 0.001.

BDI, Beck Depression Inventory; Daytime, ISI impairments daytime; DIS, difficulties with initiating sleep; DMS, difficulties maintaining sleep; EMA, early morning awakenings; MorRefr, ISI morning refreshment; QoL, quality of life; QoS, sleep quality.