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Table 1 Socio-demographic characteristics of the total Copenhagen Aging and Midlife Biobank (CAMB) sample and across body mass index categories

From: Associations between obesity and mental distress in late midlife: results from a large Danish community sample

  Total Under weight Normal weight Overweight Obese Severely obese P value1
N 5286 55 2243 2198 746 44  
Sex N (%)
 - Men 3613 (68) 16 (29) 1356 (61) 1676 (76) 541 (73) 24 (54) <0.001
 - women 1673 (32) 39 (71) 887 (39) 522 (24) 205 (27) 20 (46)
Age N (%)
 - Age 49–53 2262 (43) 34 (62) 1067 (48) 826 (38) 311 (42) 24 (54) <0.001
 - Age 56–63 3024 (57) 21 (38) 1176 (52) 1372 (62) 435 (58) 20 (46)
Social class N (%)
 - I 826 (16) 10 (18) 407 (18) 330 (15) 76 (10) 3 (7) <0.001
 - II 1376 (26) 13 (24) 597 (27) 576 (26) 182 (24) 8 (18)
 - III 1231 (23) 6 (11) 506 (23) 541 (25) 168 (22) 10 (23)
 - IV 870 (16) 9 (16) 361 (16) 362 (16) 131 (18) 7 (16)
 - V 447 (8) 6 (11) 164 (7) 183 (8) 89 (12) 5 (11)
 - Transfer income 501 (10) 11 (20) 189 (8) 197 (9) 94 (13) 10 (23)
 - Other 35 (1) 0 (0) 19 (1) 9 (1) 6 (1) 1 (2)
Education in years M (SD) 13.2 (2.4) 13.4 (2.7) 3.6 (2.4) 13.0 (2.4) 12.4 (2.3) 12.1 (2.2) <0.001
  1. Note: 1P value for chi-square tests (categorical variables) or F tests (continuous variables) of no significant difference between the BMI categories
  2. Mean (M), Standard deviation (SD)