Table 5:
Joint Distributions (%) of Working Hour Characteristics in American Manufacturing Cohort (AMC), 51 Plant Shift Work Cohort 2003-2014, USA (N shifts=22,443,533)
| Working Hour Characteristic | Shift Type | Intensity | Duration | Rotation Pattern | Social Aspects | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||||||||||
| Morning | Day | Evening | Night | Non-Short Return | Quick Return | Very Quick Return | Shift < 12 Hours | Shift ≥ 12 Hours | Shift ≥ 13 Hours | No Rotation | Rotation | Forward Rotation | Backward Rotation | Flipped Rotation | Weekday | Weekend | ||
| All Shifts | 5.5 | 50.2 | 16.2 | 28.1 | 95.0 | 5.2 | 1.8 | 70.1 | 29.9 | 5.56 | 91.4 | 8.6 | 2.8 | 2.2 | 3.5 | 82.2 | 17.8 | |
|
| ||||||||||||||||||
| Shift Type | Morning | 100 | - | - | - | 95.4 | 4.6 | 0.9 | 70.6 | 29.4 | 5.4 | 96.8 | 3.2 | 0.9 | 0.8 | 1.5 | 79.5 | 20.5 |
| Day | - | 100 | - | - | 96.4 | 3.6 | 1.3 | 76.1 | 23.9 | 0.7 | 93.8 | 6.2 | 1.7 | 1.2 | 3.2 | 85.0 | 15.0 | |
| Evening | - | - | 100 | - | 93.0 | 7.0 | 2.4 | 82.8 | 17.2 | 13.6 | 89.6 | 10.4 | 6.5 | 3.1 | 0.8 | 85.9 | 14.1 | |
| Night | - | - | - | 100 | 92.8 | 7.2 | 2.5 | 51.8 | 48.2 | 9.6 | 87.2 | 12.8 | 3.0 | 3.7 | 6.1 | 75.5 | 24.5 | |
|
| ||||||||||||||||||
| Intensity | Non-short return | 5.5 | 51.1 | 15.9 | 27.5 | 100 | - | - | 71.2 | 28.8 | 3.5 | 92.4 | 7.6 | 3.0 | 0.9 | 3.7 | 82.3 | 17.7 |
| Quick return | 4.9 | 34.5 | 21.7 | 38.9 | - | 100 | 48.8 | 51.2 | 41.9 | 73.3 | 26.8 | 0.02 | 26.3 | 0.4 | 79.4 | 20.6 | ||
| Very quick return | 2.8 | 35.7 | 21.9 | 39.6 | - | 100 | 100 | 53.6 | 46.4 | 38.3 | 68.0 | 32.1 | 0.1 | 31.5 | 0.5 | 79.9 | 20.1 | |
|
| ||||||||||||||||||
| Duration | Shift < 12 hours | 5.2 | 54.6 | 19.1 | 20.8 | 96.4 | 3.6 | 1.4 | 100 | - | - | 94.3 | 5.8 | 3.5 | 1.7 | 0.6 | 84.9 | 15.2 |
| Shift ≥ 12 hours | 5.4 | 40.1 | 9.3 | 45.3 | 91.1 | 8.9 | 2.7 | - | 100 | 18.6 | 84.9 | 15.2 | 1.2 | 3.5 | 10.5 | 75.9 | 24.1 | |
| Shift ≥ 13 hours | 5.3 | 6.4 | 39.7 | 48.6 | 60.6 | 39.4 | 12.2 | - | 100 | 100 | 75.2 | 24.8 | 4.5 | 16.3 | 4.0 | 81.4 | 18.6 | |
|
| ||||||||||||||||||
| Rotation Pattern | No rotation | 5.8 | 51.5 | 15.8 | 26.8 | 95.8 | 4.2 | 1.3 | 72.2 | 27.8 | 4.6 | 100 | - | - | - | - | 82.2 | 17.8 |
| Rotation | 2.1 | 36.4 | 19.6 | 41.9 | 83.7 | 16.3 | 6.6 | 47.0 | 53.0 | 16.1 | - | 100 | 32.7 | 25.9 | 41.4 | 81.3 | 18.7 | |
| Forward rotation | 1.7 | 31.2 | 37.2 | 30.0 | 99.9 | 0.04 | 0.04 | 87.5 | 12.6 | 8.9 | - | 100 | 100 | - | - | 78.3 | 21.7 | |
| Backward rotation | 2.1 | 27.9 | 22.7 | 47.3 | 37.9 | 62.1 | 25.1 | 52.4 | 47.6 | 40.7 | - | 100 | - | 100 | - | 71.2 | 28.8 | |
| Flipped rotation | 2.4 | 45.9 | 3.7 | 48.0 | 99.4 | 0.6 | 0.3 | 11.7 | 88.3 | 6.3 | - | 100 | - | - | 100 | 90.0 | 10.0 | |
|
| ||||||||||||||||||
| Social Aspects | Weekday | 5.3 | 52.0 | 16.9 | 25.9 | 95.0 | 5.1 | 1.7 | 72.4 | 27.7 | 5.5 | 91.5 | 8.5 | 2.7 | 1.9 | 3.9 | 100 | - |
| Weekend | 6.3 | 42.3 | 12.8 | 38.6 | 94.0 | 6.0 | 2.0 | 59.5 | 40.5 | 5.8 | 91.0 | 8.6 | 3.4 | 3.6 | 2.0 | - | 100 | |
Most shift domain categories are not mutually exclusive and marginal totals of shift domains will not sum to 100%.
Within each domain, columns are the numerator, rows are the denominator. Therefore, the number in the first row and first column states 5.5% of all shifts are morning shifts.
Dashes (-) are used when the shift domain definitions are mutually exclusive; to reflect a structural zero. Refer to Appendix Table 1 for specific definitions for each working time characteristic.