Distribution of mental health variables by tertiles of dietary pattern scores in a large sample of Iranian manufacturing employees
| Western dietary pattern scores | Healthy dietary pattern scores | Traditional dietary pattern scores | ||||||||||
| Tertile 1 | Tertile 2 | Tertile 3 | P value* | Tertile 1 | Tertile 2 | Tertile 3 | P value* | Tertile 1 | Tertile 2 | Tertile 3 | P value* | |
| Depression | ||||||||||||
| Mean (SD) | 2.043 (2.53) | 2.13 (2.49) | 2.34 (2.69) | 0.03 | 2.46 (2.84) | 2.20 (2.60) | 1.88 (2.24) | <0.0001 | 1.99 (2.35) | 2.11 (2.64) | 2.41 (2.70) | 0.001 |
| Median (IQR) | 1 (0–3) | 1 (0–3) | 1.5 (0–3) | 2 (0–4) | 1 (0–3) | 1 (0–3) | 1 (0–3) | 1 (0–3) | 2 (0–3) | |||
| Yes | 60 (6.2) | 58 (5.9) | 79 (8.0) | 90 (9.5) | 64 (6.6) | 43 (4.2) | 53 (5.4) | 66 (6.7) | 78 (8.0) | |||
| No | 908 (93.8) | 928 (94.1) | 909 (92.0) | 860 (90.5) | 908 (93.4) | 977 (95.8) | 928 (94.6) | 915 (93.3) | 902 (92.0) | |||
| Anxiety | ||||||||||||
| Mean (SD) | 1.99 (2.67) | 2.32 (3.05) | 2.37 (3.04) | 0.016 | 2.42 (3.14) | 2.25 (2.95) | 2.03 (2.68) | 0.043 | 2.05 (2.68) | 2.13 (2.96) | 2.51 (3.11) | 0.001 |
| Median (IQR) | 1 (0–3) | 1 (0–3) | 1 (0–4) | 1 (0–4) | 1 (0–3) | 1 (0–3) | 1 (0–3) | 1 (0–3) | 1 (0–4) | |||
| Yes | 69 (7.1) | 99 (10.0) | 95 (9.6) | 93 (9.8) | 93 (9.6) | 77 (7.5) | 78 (8.0) | 79 (8.1) | 106 (10.8) | |||
| No | 899 (92.9) | 887 (90.0) | 893 (90.4) | 857 (90.2) | 879 (90.4) | 943 (92.5) | 903 (92.0) | 902 (91.9) | 874 (89.2) | |||
| Psychological distress | ||||||||||||
| Mean (SD) | 0.47 (1.17) | 0.65 (1.38) | 0.74 (1.46) | <0.0001 | 0.71 (1.48) | 0.57 (1.23) | 0.59 (1.31) | 0.081 | 0.53 (1.23) | 0.57 (1.28) | 0.77 (1.50) | <0.0001 |
| Median (IQR) | 0 (0–0) | 0 (0–1) | 0 (0–1) | 0 (0–1) | 0 (0–1) | 0 (0–1) | 0 (0–0) | 0 (0–1) | 0 (0–1) | |||
| Yes | 34 (3.5) | 46 (4.7) | 56 (5.7) | 53 (5.6) | 42 (4.3) | 41 (4.0) | 38 (3.9) | 40 (4.1) | 58 (5.9) | |||
| No | 934 (96.5) | 940 (95.3) | 932 (94.3) | 897 (94.4) | 930 (95.7) | 979 (96.0) | 943 (96.1) | 941 (95.9) | 922 (94.1) | |||
Values are mean (SD), median (IQR) or number (%).
*Analysis of variance for continuous variables was used.