Distribution of demographic, lifestyle, job-related characteristics, mental health and dietary patterns of study participants across two extracted latent classes of mental health problems
| High mental health problems class (n=259) | Low mental health problems class (n=2683) | P value* | |
| Demographic characteristics | |||
| Age (years) | 36.53 (7.12) | 36.69 (7.34) | 0.733 |
| Male | 228 (88.0) | 2461 (91.7) | 0.043 |
| Marital status | 0.191 | ||
| Married | 227 (87.6) | 2420 (90.2) | |
| Educational level | 0.012 | ||
| 6–12 years | 143 (55.2) | 1688 (62.9) | |
| >12 years | 98 (37.8) | 787 (29.3) | |
| Family size | 4 (3–4) | 4 (3–4) | 0.268 |
| 3.67 (1.18) | 3.59 (1.09) | ||
| Lifestyle characteristics | |||
| Sleep duration (hours) | 7 (6–8) | 7 (6–8) | <0.001 |
| 6.66 (1.29) | 7.15 (1.15) | ||
| Physical activity (score) | 3 (1.17–7.25) | 4.5 (2–11) | <0.001 |
| 7.33 (11.83) | 9.81 (14.7) | ||
| Body mass index | 0.242 | ||
| Underweight (<18.5) | 6 (2.3) | 58 (2.2) | |
| Overweight (25–30) | 122 (47.1) | 1171 (43.6) | |
| Obese (>30) | 20 (7.7) | 324 (12.1) | |
| Smoking | 0.124 | ||
| Yes | 86 (33.2) | 769 (28.7) | |
| Job-related characteristics | |||
| Shift work | 0.003 | ||
| Yes | 119 (45.9) | 1493 (55.6) | |
| Second job | 0.533 | ||
| Yes | 27 (10.4) | 248 (9.2) | |
| ER ratio | 0.65 (0.27) | 0.67 (0.22) | 0.193 |
| Income | 0.072 | ||
| <$125 | 43 (16.6) | 420 (15.7) | |
| $125–$200 | 115 (44.4) | 1397 (52.2) | |
| $200–$300 | 71 (27.4) | 573 (21.4) | |
| >$300 | 30 (11.6) | 284 (10.6) | |
| Mental health characteristics | |||
| Anxiety (score) | 6.36 (4.45) | 1.83 (2.39) | <0.0001 |
| Depression (score) | 5.69 (3.71) | 1.83 (2.15) | <0.0001 |
| Psychological distress (score) | 4.25 (1.62) | 0.27 (0.58) | <0.0001 |
| Dietary patterns | |||
| Western dietary pattern scores | 0.004 | ||
| Tertile 1 | 63 (24.3) | 905 (33.7) | |
| Tertile 2 | 95 (36.7) | 891 (33.2) | |
| Tertile 3 | 101 (39.0) | 887 (33.1) | |
| Healthy dietary pattern scores | 0.004 | ||
| Tertile 1 | 105 (40.5) | 845 (31.5) | |
| Tertile 2 | 79 (30.5) | 893 (33.3) | |
| Tertile 3 | 75 (29.0) | 945 (35.2) | |
| Traditional dietary pattern scores | 0.025 | ||
| Tertile 1 | 75 (29.0) | 906 (33.8) | |
| Tertile 2 | 81 (31.3) | 900 (33.5) | |
| Tertile 3 | 103 (39.8) | 877 (32.7) | |
Values are mean (SD) or median (IQR) and others are number (%).
*P values from independent samples t-test for continuous data and from Pearson χ2 for categorical data.
ER, ratio, effort to reward ratio.