TABLE 2.
Unadjusted Means of Intervention Costs and Benefits by Treatment Groupa
| Control (N = 480) Means (Standard Deviations)b | Intervention (N = 480) Means (Standard Deviations)b | |
|---|---|---|
|
| ||
| Costs of intervention* | 14.95 (85.46) | 707.48 (259.93) |
| All organizational cost domains | ||
| Preintervention | 6,005.43 (4,071.46) | 5,838.93 (3,726.39) |
| Postintervention | 29,952.04 (44,884.53) | 25,326.43 (37,033.32) |
| Presenteeism costs | ||
| Preintervention | 5,666.60 (3,937.19) | 5,443.60 (3,533.93) |
| Postintervention | 15,308.44 (9,782.57) | 14,804.69 (9,131.45) |
| Health care costs | ||
| Preintervention | 338.83 (958.20) | 395.33 (951.60) |
| Postintervention | 803.99 (1,667.80) | 922.81 (3,134.20) |
| Costs because of voluntary termination | ||
| Postintervention | 13,839.61 (46,719.20) | 9,598.93 (38,708.40) |
*
P < 0.001—tests are independent sample t tests.
a
Values are total costs based on employee self-report in the preintervention (6 months before the intervention) period, or in the postintervention period (18 months after the start of the intervention, collected at 6, 12, and 18 months postbaseline) and are discounted at a 3% annual rate. Turnover is not included in the preintervention period.
b
Expressed in US dollars, 2011 prices.