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Table 1 The descriptive statistics by any psychiatric disorder

From: Exposure to residential green and blue space and the natural environment is associated with a lower incidence of psychiatric disorders in middle-aged and older adults: findings from the UK Biobank

Characteristics*

Overall (n = 363,047)

Any psychiatric disorder

P for differences

No (n = 313,182)

Yes (n = 49,865)

Sex, n (%)

   

 < 0.001

 Female

193,854 (53.4)

168,043 (53.7)

25,811 (51.8)

 

 Male

169,193 (46.6)

145,139 (46.3)

24,054 (48.2)

 

Age, mean (SD)

56.70 (8.12)

56.55 (8.08)

57.64 (8.29)

 < 0.001

Ethnicity, n (%)

   

 < 0.001

 White

338,938 (93.4)

292,197 (93.3)

46,741 (93.7)

 

 Others

22,056 (6.1)

19,305 (6.2)

2751 (5.5)

 

 Unknown

2053 (0.6)

1680 (0.5)

373 (0.7)

 

Socioeconomic status, n (%) #

   

 < 0.001

 First quartile

90,706 (25.0)

80,549 (25.7)

10,157 (20.4)

 

 Second quartile

90,645 (25.0)

79,724 (25.5)

10,921 (21.9)

 

 Third quartile

90,671 (25.0)

78,468 (25.1)

12,203 (24.5)

 

 Fourth quartile

90,674 (25.0)

74,139 (23.7)

16,535 (33.2)

 

 Unknown

351 (0.1)

302 (0.1)

49 (0.1)

 

BMI, n (%)

   

 < 0.001

 Underweight or normal weight (< 24.9 kg/m2)

121,840 (33.6)

107,052 (34.2)

14,788 (29.7)

 

 Overweight (25.0–29.9 kg/m2)

154,670 (42.6)

134,072 (42.8)

20,598 (41.3)

 

 Obese (\(\ge\) 30 kg/m2)

84,384 (23.2)

70,414 (22.5)

13,970 (28.0)

 

 Unknown

2153 (0.6)

1644 (0.5)

509 (1.0)

 

Household income before tax per year (£), n (%)

   

 < 0.001

 Less than 18,000

63,916 (17.6)

51,157 (16.3)

12,759 (25.6)

 

 18,000–30,999

77,560 (21.4)

66,461 (21.2)

11,099 (22.3)

 

 31,000–51,999

80,871 (22.3)

71,472 (22.8)

9399 (18.8)

 

 52,000–100,000

65,326 (18.0)

59,235 (18.9)

6091 (12.2)

 

 Greater than 100,000

18,140 (5.0)

16,930 (5.4)

1210 (2.4)

 

 Unknown

57,234 (15.8)

47,927 (15.3)

9307 (18.7)

 

Education group, n (%)

   

 < 0.001

 College or university degree

117,426 (32.3)

105,511 (33.7)

11,915 (23.9)

 

 Any school degree (A-level, AS-level, O-level, GCSE, CSE)

137,056 (37.8)

118,757 (37.9)

18,299 (36.7)

 

 Vocational qualification (NVQ, HND, or HNC) or other professional qualifications

42,031 (11.6)

35,715 (11.4)

6316 (12.7)

 

 None of the above

58,382 (16.1)

46,696 (14.9)

11,686 (23.4)

 

 Unknown

8152 (2.2)

6503 (2.1)

1649 (3.3)

 

Smoking status, n (%)

   

 < 0.001

 Never

207,476 (57.1)

187,640 (59.9)

19,836 (39.8)

 

 Previous

124,768 (34.4)

107,671 (34.4)

17,097 (34.3)

 

 Current

28,623 (7.9)

16,137 (5.2)

12,486 (25.0)

 

 Unknown

2180 (0.6)

1734 (0.6)

446 (0.9)

 

Alcohol drinker status, n (%)

   

 < 0.001

 Daily or almost daily

74,429 (20.5)

63,106 (20.1)

11,323 (22.7)

 

 Above one time per week

180,021 (49.6)

158,186 (50.5)

21,835 (43.8)

 

 One to three times a month

39,780 (11.0)

34,344 (11.0)

5436 (10.9)

 

 Special occasions only

40,442 (11.1)

33,982 (10.9)

6460 (13.0)

 

 Never

27,334 (7.5)

22,760 (7.3)

4574 (9.2)

 

 Unknown

1041 (0.3)

804 (0.3)

237 (0.5)

 

Total physical activity, n (%)

   

 < 0.001

 Low

52,863 (14.6)

44,917 (14.3)

7946 (15.9)

 

 Moderate

118,932 (32.8)

103,994 (33.2)

14,938 (30.0)

 

 High

119,726 (33.0)

104,452 (33.4)

15,274 (30.6)

 

 Unknown

71,526 (19.7)

59,819 (19.1)

11,707 (23.5)

 

Hypertension

   

 < 0.001

 No

268,766 (74.0)

235,153 (75.1)

33,613 (67.4)

 

 Yes

94,281 (26.0)

78,029 (24.9)

16,252 (32.6)

 

Type 2 diabetes

   

 < 0.001

 No

345,223 (95.1)

299,239 (95.5)

45,984 (92.2)

 

 Yes

17,824 (4.9)

13,943 (4.5)

3881 (7.8)

 
  1. SD Standard deviation, BMI Body mass index
  2. *Unknown included prefer not to answer, do not know, and missing value in the database of UK biobank
  3. #Socioeconomic status was measured by Townsend area deprivation index