Table 5.
Adjusted mean values of all biomarkers by levels of shift work plus sleep quality, stratified by gender; BCOPS 2004–2009
| Day + good sleep | Day + poor sleep | A/N + good sleep | A/N + poor sleep | p | |
|---|---|---|---|---|---|
| Women | n = 31 | n = 37 | n = 12 | n = 19 | |
| Triglycerides | |||||
| Model 1 | 56.7 (47.1–68.4) | 70.3 (58.9–83.9) | 60.9 (44.7–82.9) | 80.4 (62.7–103.2) | 0.116 |
| Model 2 | 56.6 (47.0–68.1) | 66.2 (54.7–80.0) | 57.7 (42.2–78.9) | 74.9 (57.7–97.3) | 0.291 |
| Total cholesterol | |||||
| Model 1 | 174.8 ± 6.1 | 203.1 ± 5.8 | 204.0 ± 10.2 | 200.9 ± 8.2 | 0.004 |
| Model 2 | 174.7 ± 6.2 | 201.2 ± 6.3 | 202.3 ± 10.4 | 198.7 ± 8.7 | 0.014 |
| HDL cholesterol | |||||
| Model 1 | 53.2 ± 2.7 | 59.6 ± 2.6 | 61.2 ± 4.5 | 61.6 ± 3.7 | 0.192 |
| Model 2 | 53.1 ± 2.7 | 57.5 ± 2.8 | 59.3 ± 4.5 | 59.0 ± 3.8 | 0.513 |
| LDL cholesterol | |||||
| Model 1 | 109.2 ± 5.5 | 125.6 ± 5.2 | 129.8 ± 9.1 | 122.5 ± 7.4 | 0.103 |
| Model 2 | 109.3 ± 5.5 | 127.0 ± 5.7 | 131.0 ± 9.3 | 124.1 ± 7.8 | 0.089 |
| Men | n = 45 | n = 28 | n = 74 | n = 114 | |
| Triglycerides | |||||
| Model 1 | 119.6 (98.4–145.5) | 120.4 (93.1–155.8) | 114.9 (98.8–133.6) | 133.8 (118.3–151.4) | 0.451 |
| Model 2 | 111.4 (91.7–135.2) | 106.8 (82.6–138.0) | 95.4 (80.7–112.9) | 112.6 (98.1–129.2) | 0.359 |
| Total cholesterol | |||||
| Model 1 | 200.6 ± 5.7 | 219.7 ± 7.5 | 202.0 ± 4.4 | 206.0 ± 3.6 | 0.168 |
| Model 2 | 197.5 ± 5.7 | 212.4 ± 7.6 | 192.7 ± 5.0 | 198.0 ± 4.1 | 0.170 |
| HDL cholesterol | |||||
| Model 1 | 43.0 ± 1.8 | 46.2 ± 2.4 | 42.1 ± 1.4 | 40.9 ± 1.1 | 0.244 |
| Model 2 | 42.7 ± 1.9 | 46.4 ± 2.4 | 41.5 ± 1.6 | 40.6 ± 1.3 | 0.207 |
| LDL cholesterol | |||||
| Model 1 | 127.8 ± 5.2 | 142.3 ± 6.8 | 132.7 ± 4.0 | 132.7 ± 3.3 | 0.389 |
| Model 2 | 126.2 ± 5.3 | 137.4 ± 7.0 | 128.0 ± 4.6 | 129.1 ± 3.8 | 0.594 |
The p values were obtained from ANCOVA.
Results for triglycerides were first log-transformed then back-transformed for reporting. Results for triglycerides are means (95% CI); all other results are means ± SE.
Model 1: adjusted for age.
Model 2: adjusted for age and race/ethnicity.
A/N, afternoon/night shift; ANCOVA, analysis of covariance; BCOPS, Buffalo Cardio-metabolic Occupational Police Stress; CI, confidence interval; HDL, high-density lipoprotein; LDL, low-density lipoprotein; SE, standard error.