TABLE II.
Associations Between Shiftwork Status at Baseline and Selected Variables; BCOPS Study 2004–2009
| Day (n=94) |
Afternoon (n=49) |
Night (n=45) |
||
|---|---|---|---|---|
| Variable | Mean±SD | Mean±SD | Mean±SD | P-value |
| Age (years) | 43.9±6.7 | 39.7±6.3 | 37.7±7.0 | <0.0001 |
| BMI (kg/m2) | 29.5±4.9 | 29.0±4.2 | 29.4±4.3 | 0.864 |
| Body fat (%) | 27.0±6.0 | 23.3±5.2 | 22.9±6.3 | <0.0001 |
| N (%) | N (%) | N (%) | ||
| Gender | <0.001 | |||
| Women | 32 (34.0) | 4 (8.2) | 5 (11.1) | |
| Men | 62 (66.0) | 45 (91.8) | 40 (88.9) | |
| Race/ethnicity | 0.012 | |||
| White/Hispanic | 70 (76.1) | 46 (95.8) | 35 (77.8) | |
| African American | 22 (23.9) | 2 (4.2) | 10 (22.2) | |
| Education | 0.039 | |||
| ≤12 years/GED | 12 (12.8) | 5 (10.4) | 1 (2.2) | |
| College <4 yrs | 58 (61.7) | 23 (47.9) | 23 (51.1) | |
| College ≥4 yrs | 24 (25.5) | 20 (41.7) | 21 (46.7) | |
| Second job | <0.001 | |||
| No | 73 (77.7) | 28 (58.3) | 20 (44.4) | |
| Yes | 21 (22.3) | 20 (41.7) | 25 (55.6) |
BCOPS, Buffalo Cardio-Metabolic Occupational Police Stress.
P values were obtained ANOVA (for continuous variables) and chi-square tests or Fisher’s exact tests (for categorical variables).
P values in bold are statistically significant results.