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. 2016 Jul 22;6(7):e011564. doi: 10.1136/bmjopen-2016-011564

Table 1.

Sociodemographic characteristics and health outcomes of the study participants

Olmsted County, MN (n=728) Jackson County, MO (n=701)
Demographic characteristics
 Age (years), median (25–75th centiles) 10 (5–14) 10 (5–14)
 Sex, female N (%) 358 (49%) 355 (51%)
Socioeconomic characteristics
 Parents' education
  Less than high school education 4 (0.5%) 18 (2.6%)
  High school graduate 37 (5.1%) 103 (15%)
  Some college, no degree 140 (19%) 173 (25%)
  Associate/college degree 291 (40%) 229 (33%)
  Graduate or professional degree 256 (35%) 178 (25%)
 Family annual income
  <$24 999 9 (1.3%) 51 (7.8%)
  $25 000–$49 999 86 (12%) 139 (21%)
  $50 000–$74 999 144 (20%) 154 (24%)
  $75 000–$99 999 161 (22%) 136 (21%)
  Over $100 000 316 (44%) 175 (27%)
 Hollingshead index
  8–19 2 (0.3%) 2 (0.3%)
  20–29 12 (1.6%) 35 (5.0%)
  30–39 54 (7.4%) 109 (16%)
  40–54 254 (35%) 268 (38%)
  55–66 406 (56%) 287 (41%)
 Nakao-Treas index
  0–12.5 0 (0.0%) 0 (0.0%)
  12.6–25.1 2 (0.3%) 5 (0.7%)
  25.2–37.7 53 (7.3%) 101 (14%)
  37.8–50.3 79 (11%) 105 (15%)
  50.4–62.9 109 (15%) 105 (15%)
  63.0–75.5 184 (25%) 192 (27%)
  75.6–88.1 230 (32%) 156 (22%)
  88.2–100 71 (9.8%) 37 (5.3%)
Health outcomes
 Obesity, N (%) 71 (12%) 81 (15%)
 Low birth weight, N (%) 78 (11%) 43 (6.5%)
 Smoking exposure, N (%) 89 (12%) 188 (27%)

MN, Minnesota; MO, Missouri.