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Table 1 Characteristics of participant according to mood disorder groups

From: Chronic multisite pain in major depression and bipolar disorder: cross-sectional study of 149,611 participants in UK Biobank

  Mood group*
N = 149,611^
  Comparison group Probable depression Probable bipolar disorder
N = 116,184^ N = 31,814^ N = 1,613^
  N (%) N (%) N (%)
Chronic pain status    
No chronic pain 71,800 (61.8) 15,766 (49.6) 729 (45.2)
1 site 26,061 (22.4) 7,736 (24.3) 373 (23.1)
2-3 sites 15,285 (13.2) 6,299 (19.8) 365 (22.6)
4-7 sites 2,068 (1.8) 1,416 (4.5) 93 (5.8)
Widespread pain 970 (0.8) 597 (1.9) 53 (3.3)
Female 58,395 (50.3) 20,490 (64.4) 790 (49.0)
Townsend Index quintiles    
1 (least deprived) 23,749 (20.5) 5,930 (18.7) 211 (13.1)
2 23,724 (20.5) 5, 921 (18.7) 213 (13.2)
3 23,324 (20.1) 6,285 (19.8) 267 (16.6)
4 23,004 (19.8) 6,507 (20.5) 364 (22.6)
5 (most deprived) 22,208 (19.1) 7,106 (22.4) 557 (34.6)
Ethnicity    
White 105,746 (91.4) 29,957 (94.5) 1,421 (88.8)
Asian/Asian British 3,955 (3.4) 584 (1.8) 66 (4.1)
Black/Black British 3,358 (2.9) 539 (1.7) 53 (3.3)
Other 2,683 (2.3) 623 (2.0) 61 (3.8)
Employment status    
In paid employment/look after home 66,418 (57.7) 18,111 (57.4) 880 (55.2)
Retired 42,985 (37.4) 10,403 (33.0) 401 (25.1)
Unemployed/unpaid 2,888 (2.5) 969 (3.1) 77 (4.8)
Not working due to sick 2,538 (2.2) 1,910 (6.1) 228 (14.3)
Student 269 (0.2) 140 (0.4) 9 (0.6)
Smoking status    
Never 66,360 (57.3) 15,988 (50.4) 686 (42.7)
Former 42,139 (36.4) 12,721 (40.1) 633 (39.4)
Current 7,288 (6.3) 3,036 (9.6) 286 (17.8)
Frequency of alcohol intake    
Daily/almost daily 24,246 (20.9) 6,281 (19.8) 326 (20.3)
3-4 times/week 27,110 (23.4) 6,720 (21.1) 267 (16.6)
1-2 times/week 29,736 (25.6) 7,653 (24.1) 352 (21.9)
1-3 times/month 12,624 (10.9) 4,053 (12.8) 201 (12.5)
Special occasions only 13,130 (11.3) 4,213 (13.3) 243 (15.1)
Never 9,279 (8.0) 2,878 (9.1) 220 (13.7)
BMI categories    
Underweight 558 (0.5) 161 (0.5) 15 (1.0)
Normal weight 38,218 (33.1) 9,950 (31.5) 460 (28.8)
Overweight 49,574 (43.0) 12,806 (40.5) 631 (39.5)
Obese 27,08 (23.4) 8,674 (27.5) 490 (30.7)
  Mean (SD) Mean (SD) Mean (SD)
Age in years 57.03 (8.2) 55.70 (8.0) 54.4 (8.1)
Morbidity count 0.88 (1.0) 1.09 (1.2) 1.15 (1.2)
  1. ^Overall number varies by the amount of missing data but 149,611 participants were eligible for analysis.
  2. *Differences between groups were statistically significant at p < 0.001 for all variables (tests by Chi2 test for categorical variables and Kruskal Wallis test for continuous variables).
  3. SD – standard deviation; BMI – body mass index.