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Table 1 Participant characteristics for the entire sample and for individuals with and without self-reported doctor-diagnosed arthritis

From: Independent associations of childhood and current socioeconomic status with risk of self-reported doctor-diagnosed arthritis in a family-medicine cohort of North-Carolinians

  Entire sample Arthritis No arthritis
(n = 1276) (n = 767) (n = 509)
Key variable N (%) or N (%) or N (%) or
mean (S.D.) mean (S.D.) mean (S.D.)
Female 899 (70) 561 (73) 338 (66)
African-American 200 (16) 117 (15) 83 (16)
Age (22–94) 57.0 (14.0) 60.1 (12.8) 52.3 (14.5)
BMI1 (13–65) 29.5 (6.8) 30.3 (6.9) 28.4 (6.3)
Socioeconomic characteristics    
Non-homeowner 216 (17) 134 (17) 82 (16)
Education    
  > High School 817 (64) 445 (58) 372 (73)
  High School 327 (26) 218 (28) 109 (21)
  < High School 132 (10) 104 (14) 28 (6)
Occupation    
  Professional/managerial 540 (42) 292 (38) 248 (49)
  Sales and office 287 (22) 173 (23) 114 (22)
  Other 449 (35) 302 (39) 147 (29)
Childhood socioeconomic characteristics    
Parents not homeowners 343 (73) 233 (30) 110 (22)
Maternal Education    
  > High School 258 (20) 131 (17) 127 (25)
  High School 413 (32) 218 (28) 195 (38)
  < High School 605 (47) 418 (54) 187 (37)
Paternal occupation    
  Professional/managerial 274 (21) 156 (20) 118 (23)
  Sales and office 117 (9) 60 (8) 57 (11)
  Other 885 (69) 551 (72) 334 (66)
SES summary scores    
Current 2    
  High 426 (33) 222 (29) 204 (40)
  Medium 388 (30) 227 (30) 161 (32)
  Low 363 (28) 250 (33) 113 (22)
  Lowest 99 (8) 68 (9) 31 (6)
Childhood 3    
  High 268 (21) 134 (17) 134 (26)
  Medium 395 (31) 218 (28) 177 (35)
  Low 401 (31) 261 (34) 140 (28)
  Lowest 212 (17) 154 (20) 58 (11)
SES Trajectories (childhood to current) 4    
  High to high 162 (13) 76 (10) 86 (17)
  High to medium 73 (6) 38 (5) 35 (7)
  High to low/lowest 33 (3) 20 (3) 13 (3)
  Medium to high 154 (12) 81 (11) 73 (14)
  Medium to medium 139 (11) 73 (10) 66 (13)
  Medium to low/lowest 102 (8) 64 (8) 38 (7)
  Low/Lowest to high 110 (9) 65 (8) 45 (9)
  Low/Lowest to medium 176 (14) 116 (15) 60 (12)
  Low/Lowest to low/lowest 327 (26) 234 (31) 93 (18)
  1. 1Body mass index, in kg/m2.
  2. 2Count of current low-SES () characteristics.
  3. 3Count of childhood low-SES () characteristics.
  4. 4Permutations of childhood and current summary SES categories; “low” and “lowest” summary scores collapsed together.