Table 1.

Characteristics of the sample according to level of psychological distress (n = 16,485).

Characteristics	Level of psychological distress				p value
	Asymptomatic (n = 9482)	Low (n = 4362)	Moderate (n = 1346)	High (n = 1295)
Age (years), mean (SD)	50.42 (15.75)	46.94 (15.99)	45.77 (15.57)	45.61 (13.39)	<0.001
BMI (kg/m2), mean (SD)	26.20 (4.58)	26.50 (4.99)	26.23 (5.11)	26.82 (5.86)	<0.001
Dieta, mean (SD)	3.53 (1.56)	3.40 (1.52)	3.34 (1.49)	3.25 (1.55)	<0.001
Exerciseb, mean (SD)	11.01 (9.21)	10.28 (9.97)	9.86 (9.87)	9.80 (10.16)	<0.001
Neighbourhood cohesion, mean (SD)	29.49 (5.85)	28.69 (6.19)	27.96 (6.55)	27.78 (6.91)	<0.001
Female, %	54.00	56.95	63.60	63.63	<0.001
SEPc, %					<0.001
Unskilled	4.32	4.08	4.98	4.94	–
Semi-skilled	13.32	14.44	16.05	17.06	–
Skilled manual	17.74	17.54	16.72	18.38	–
Skilled non-manual	21.69	22.24	23.85	26.02	–
Managerial/technical	36.54	35.30	33.88	29.11	–
Professional	6.38	6.40	4.52	3.78	–
Baseline disease, %
Arthritis	12.19	15.45	16.49	17.92	<0.001
COPDd	1.69	2.66	2.45	4.17	<0.001
Diabetes	4.69	4.61	4.75	5.56	0.544
CVDe	4.90	5.55	5.87	6.33	0.068
Smoking status, %					<0.001
Never smoked	41.36	40.97	36.70	33.36	–
Ex-smoker	41.47	38.70	37.89	35.14	–
Current smoker	17.17	20.33	25.41	31.51	–
Married or living with a partner, %	24.85	28.66	33.36	39.54	<0.001

Note: p value indicates significance of test for linear trend in continuous variables and significance of chi-square test for categorical variables.

^aNumber of portions of fruit and vegetable eaten in a day.

^bNumber of days in the last four weeks on which participants spent ≥30 min walking.

^cSocioeconomic position as indexed by occupation.

^dChronic obstructive pulmonary disease.

^eCardiovascular disease.