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. 2017 Apr 28;12(4):e0176014. doi: 10.1371/journal.pone.0176014

Table 1. Sample characteristics I: sociodemographics, health behavior and symptom distress by group; contrast weights (-1/-1/-1/3).

Contrast
Controls NA trait SI trait Type D t p
n (%) 93 (14.4) 55 (8.5) 208 (32.1) 290 (44.8)
Sex, n (%)
    Women 5 (5.7) 11 (21.2) 15 (7.8) 42 (15.8)
    Men 82 (94.3) 41 (78.8) 178 (92.2) 224 (84.2)
Age, years 41 (11) 38 (13) 41 (11) 43 (11) 2.390 .017
Alcohol, g per day 14.31 (13.11) 16.66 (17.08) 15.61 (14.85) 18.26 (18.87) 1.694 .091
Current smoking, n (%) 24 (25.8) 20 (36.4) 53 (25.6) 77 (26.7)
Physical activity per kg 4.39 (4.03) 3.69 (4.11) 3.94 (4.66) 4.22 (6.19) 0.577 .56
BMI, kg/m2 26.39 (3.20) 25.47 (3.52) 26.16 (3.80) 26.58 (4.37) 1.284 .20
Type-D: NA trait 5.38 (2.57) 12.64 (2.61) 6.78 (6.78) 14.50 (3.56) 23.030 < .0001
Type-D: SI trait 7.77 (1.31) 8.15 (8.15) 12.40 (2.02) 13.39 (2.49) 23.031 < .0001
Type-D: Total score 13.15 (3.13) 20.78 (2.91) 19.18 (3.03) 27.90 (4.90) 27.337 < .0001
SF-12: Physical score 53.12 (5.96) 51.60 (7.67) 52.11 (6.02) 47.31 (9.44) -7.157 < .0001
SF-12: Mental score 53.41 (6.62) 42.17 (10.40) 52.07 (6.48) 43.07 (10.44) -7.389 < .0001
HADS: Anxiety 4.08 (2.61) 7.75 (2.51) 5.04 (2.71) 8.11 (2.55) 7.045 < .0001
HADS: Depression 2.72 (2.18) 5.73 (3.02) 3.35 (2.43) 6.56 (3.10) 10.065 < .0001
Jenkins Sleep Index 3.33 (2.95) 6.78 (4.33) 4.11 (3.22) 7.18 (4.37) 6.526 < .0001
Social Support Scale 62.97 (5.99) 60.57 (8.22) 58.60 (8.67) 56.66 (9.04) -5.523 < .0001

Note: Results are presented as means and standard deviations (SD), or frequencies n (%).

Abbreviations: BMI, body mass index; NA trait, negative affectivity trait; SI trait, social inhibition trait; SF-12, Short Form Health Survey; HADS, Hospitality Anxiety and Depression Scale.