Table 2.

Dysthymia Presenteeism, Absenteeism and Depression Symptom Severity Outcomes: Mixed Effects Models^a

	Experimental Intervention						Usual Care
	Baseline		Follow-Up		Change		Baseline		Follow-Up		Change
	n=85		n=78				n=82		n=72				Difference in Change Scores
	Mean	SD	Mean	SD	Mean	Effect Size^e	Mean	SD	Mean	SD	Mean	Effect Size^e	Change (95% CI)	Effect Size^e	P
Presenteeism^b
Percent at-work productivity loss (0–27)	8.6	3.4	4.9	3.7	−3.7	−1.09	8.4	3.8	8.0	4.0	−0.4	−0.11	−3.3 (−4.6, −2.0)	−0.91	<.001
Percent time with at-work limitations by task
Time management (0– 100)	35.0	17.9	20.3	18.5	−14.8	−0.83	33.5	19.1	34.6	19.9	1.1	0.06	−15.2 (−21.7, −8.7)	−0.68	<.001
Physical tasks (0–100)	18.9	17.6	10.5	17.9	−8.3	−0.47	16.8	16.9	16.8	16.5	0.0	0.00	−4.3 (−10.4, 1.8)	−0.29	.17
Mental-Interpersonal tasks (0–100)	30.3	13.1	17.0	12.7	−13.3	−1.02	31.4	13.8	27.1	14.6	−4.3	−0.31	−11.2 (−15.7, −6.6)	−0.83	<.001
Output tasks (0–100)	36.4	19.8	18.8	19.1	−17.6	−0.89	33.1	20.7	34.1	21.9	1.0	0.05	−17.5 (−24.4, − 10.5)	−0.86	<.001
Absences Due to Health or Medical Care^c
Days missed (0–80)	1.2	2.0	0.5	0.9	−0.7	−0.35	1.1	1.5	1.1	2.1	−0.0	−0.00	−0.5 (−1.1, 0.1)	−0.31	.09
Percent productivity loss due to absence (0–100)	10.4	17.0	6.0	15.6	−4.4	−0.26	10.8	14.6	11.3	21.6	0.5	0.03	−4.0 (−9.7, 1.6)	−0.23	.16
Depression^d
Symptom severity (0–27)	9.5	2.7	5.3	3.9	−4.2	−1.56	9.4	2.5	8.9	4.4	−0.5	−0.20	−3.8 (−5.0, −2.6)	−0.89	<.001
Sensitivity Analysis (LOCF)
Percent at-work productivity loss (0–27)	8.6	3.4	5.4	4.1	−3.2	−0.94	8.4	3.8	8.1	4.0	−0.3	−0.08	−3.0 (−4.0, −2.0)	−0.88	<.001
Depression symptom severity (0–27)	9.5	2.7	5.8	4.2	−3.7	−1.37	9.4	2.5	9.2	4.2	−0.2	−0.08	−3.4 (−4.7, −2.2)	−0.83	<.001

Models are adjusted for recruitment site, participant mean age, percent male, percent White, percent married, percent white collar occupation, mean number of co-morbidities, percent full time employed at baseline, and baseline mean scores of model dependent variable.

Based on responses to the Work Limitations Questionnaire (WLQ). Scale scores indicate the percent of time limited in the past two weeks in ability to perform job tasks (e.g., time management). Possible scale scores range from 0 to 100, with higher scores indicating greater percentage of time limited in the past two weeks in ability to perform job tasks. Possible productivity loss scores range from 0 to 27, with higher scores indicating greater productivity loss.

Based on responses to the WLQ Time Loss Module. Productivity loss is the mean percentage of hours missed in the past two weeks divided by the total number of hours usually worked in that time period. Possible days missed range from 0 to 14. Possible percent productivity loss due to absenteeism ranges from 0 to 100, with higher scores indicating greater productivity loss.

Symptom severity score was assessed using the PHQ-9. Possible scores on the PHQ-9 range from 0 to 27. Higher scores indicate more severe depressive symptoms.

Effect size was computed as the ratio of the difference of change score and the pooled standard deviation of baseline scores for both groups.