Table 4.
Effect of Intervention on 6-, 12- and 18-month Sleep Outcomes
| Predictor | Sleep Outcomes
|
|||||||
|---|---|---|---|---|---|---|---|---|
| Act. Total Sleep Time
|
Act. WASO
|
Insufficiency
|
Insomnia
|
|||||
| γ | (95% CI) | γ | (95% CI) | γ | (95% CI) | γ | (95% CI) | |
| Fixed Effects | ||||||||
| Intercept | 436.10* | (424.43, 447.77) | 46.50* | (42.89, 50.12) | 2.59* | (2.40, 2.78) | 2.59* | (2.48, 2.74) |
| Core Functiona | −4.35 | (−12.80, 4.11) | −1.32 | (−3.96, 1.32) | −0.07 | (−0.20, 0.06) | −0.10 | (−0.21, 0.01) |
| # of Emps for Rmz | 0.14 | (−0.18, 0.47) | −0.08 | (−0.19, 0.02) | 0.01* | (0.00, 0.01) | 0.01* | (0.00, 0.01) |
| Merger | 4.10 | (−5.15, 13.35) | 0.17 | (−2.70, 3.04) | 0.13 | (−0.01, 0.28) | 0.02 | (−0.11, 0.14) |
| Intervention | −10.51* | (−19.57, −1.45) | 0.44 | (−2.38, 3.26) | 0.06 | (−0.09, 0.21) | −0.01 | (−0.14, 0.11) |
| 6 m. Wave | 1.82 | (−3.41, 7.04) | 2.16* | (0.55, 3.76) | −0.01 | (−.11, .10) | −0.06 | (−0.15, 0.03) |
| 12 m. Wave | −3.75 | (−9.00, 1.50) | −2.27* | (−3.88, −0.66) | 0.01 | (−0.10, 0.11) | −0.01 | (−0.10, 0.08) |
| 18 m. Wave | 0.52 | (−5.04, 6.09) | 2.16* | (0.35, 3.77) | −0.09 | (−0.20, 0.02) | −0.06 | (−0.14, 0.04) |
| Intervention* 6 m. Wave | 9.13* | (1.77, 16.48) | 1.15 | (−1.11, 3.41) | −0.16* | (−0.31, −0.01) | 0.06 | (−0.06, 0.18) |
| Intervention* 12 m. Wave | 8.65* | (1.89, 16.12) | 1.40 | (−0.89, 3.69) | −0.25* | (−0.40, −0.10) | −0.05 | (−0.17, 0.07) |
| Intervention* 18 m. Wave | 13.32* | (5.36, 21.28) | 1.25 | (−1.19, 3.69) | −0.20* | (−0.36, −0.04) | 0.06 | (−0.07, 0.19) |
| Random Effects | ||||||||
| CS Diagonal Offset | 901.97* | 81.16* | 0.38* | 0.25 | ||||
| CS Covariance | 1966.11* | 170.94* | 0.45* | 0.33 | ||||
| Intercept | 11.65 | 2.86 | N/A | N/A | ||||
Note. CI, confidence interval. # of Emps for Rmz, number of employees for randomization.
a
The core function identifies groups where most individuals were involved in software development; groups dominated by other IT jobs are the reference group. N/A, not available because covariance parameter is redundant and thus the confidence interval could not be computed.
*
p < .05.