Table 1.

Percentage of clinical sample who endorsed each item response

Item ISI	Item response choice*
	0	1	2	3	4
1. falling asleep	19.6	25.3	22.8	21.5	10.8
2. staying asleep	0.0	4.4	17.7	53.8	24.1
3. early awakening	9.5	8.2	27.9	39.9	14.6
4. satisfaction	0.6	1.9	6.3	43.7	47.5
5. interference	1.3	7.6	43.0	36.1	12.0
6. noticeable	6.3	29.1	45.6	17.1	1.9
7. worry	0.0	4.4	38.6	41.1	15.8

^*Items 1–3 0, no problem; 1, mild; 2, moderate; 3, severe; 4, very severe

*Item 4 0, very satisfied; 1, satisfied; 2, neutral; 3, dissatisfied; 4, very dissatisfied

*Items 5–7 0, not at all; 1, a little; 2, somewhat; 3, much; 4, very much