Table 2.

Distribution of Center for Epidemiological Studies-Depression Scale Responses by Year, Aerobics Center Longitudinal Study, Dallas, Texas

Questionnaire Item	Year
	1990			1995			1999
	Total No.	No. ≥1a	%	Total No.	No. ≥1a	%	Total No.	No. ≥1a	%
Unusually bothered	6,612	1,575	23.8	6,437	1,404	21.8	7,517	961	12.8
Trouble concentrating	6,638	1,995	30.5	6,403	1,903	29.7	7,533	1,485	19.7
Felt depressed	6,641	1,337	20.1	6,445	1,333	20.7	7,538	1,142	15.2
Everything was an effort	6,639	1,488	22.4	6,427	1,491	23.2	7,545	1,792	23.8
Felt hopefulb	6,639	2,120	31.9	6,409	1,779	27.8	7,520	2,133	28.4
Felt fearful	6,619	984	14.9	6,429	876	13.6	7,496	704	9.4
Restless sleep	6,641	2,953	44.5	6,428	3,248	50.5	7,540	3,694	49.0
Was happyb	6,639	2,101	31.7	6,422	1,782	27.8	7,526	2,229	29.6
Felt lonely	6,635	1,159	17.5	6,433	1,178	18.3	7,542	1,094	14.5
Could not get “going”	6,605	1,637	24.8	6,440	1,657	25.7	7,551	1,871	24.8

^a Responses ranged from 0–3, with 0 = rarely or none of the time, 1 = some or a little of the time, 2 = occasionally or a moderate amount of the time, and 3 = most or all of the time.

^b These items were reverse coded.