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. Author manuscript; available in PMC: 2014 Feb 1.
Published in final edited form as: J Adolesc. 2012 Nov 28;36(1):139–148. doi: 10.1016/j.adolescence.2012.10.005

Table 2.

Participants’ Characteristics and Psychosocial Health by Obesity Trajectory Groups

Chronically
Obese
(n = 440)
Decreasing
(n = 294)
Increasing
(n = 262)
Non-obese
(n = 4,180)
Total
(n = 5,156)
χ2 or F
statistics
Demographics
 Gender (%)
  Males 56.8 41.2 58.4 49.4 50.0 χ2(3)=25.4**
  Females 43.2 58.8 41.6 50.6 50.0
 Ethnicity (%)
  African-American 46.4 38.4 41.6 33.0 34.9 χ2(9)=55.6 **
  Hispanic 21.1 23.1 22.1 21.6 21.6
  White 30.4 37.8 32.8 43.7 41.7
  Other 2.1 0.7 3.5 1.7 1.8
Psychosocial indicators
 Self esteem (mean, SD) 31.9 (3.7) 32.4 (3.7) 31.5 (3.6) 32.2 (3.8) 32.2 (3.8) F(3,5034)=4.1**
 High Self-esteem (%) 33.0 37.4 24.6 33.7 33.4 χ2(3)=11.2 *
 Self control (Mean, SD) 21.7 (2.8) 22.0 (2.7) 21.2 (2.7) 21.8 (2.7) 21.8 (2.7) F(3,5033)=5.4**
 High self control (%) 53.4 57.1 42.6 54.5 53.9 χ2(3)=14.9 **
 CESD score (Mean, SD) 4.9 (3.2) 4.6 (3.2) 4.9 (3.1) 4.6 (3.2) 4.7 (3.2) F(3,5043)=1.3
 CESD depression (%) 24.2 17.7 23.8 20.5 20.9 χ2(3)=6.3
School experiences
 Ever repeated a grade (%) 27.8 21.4 35.2 23.8 24.6 χ2(3)=20.9 **
 Ever skipped a grade (%) 4.4 4.5 6.3 4.2 4.3 χ2(3)=2.6
 High satisfaction with school (%) 9.6 9.3 9.6 10.5 10.3 χ2(3)=1.0
 Expect to go college (%) 58.7 62.9 49.4 62.6 61.6 χ2(3)=19.3 **
Friendship
 Often Feel lonely (%) 10.4 10.0 14.6 8.2 8.8 χ2(3)=14.0 **
 Number of friends (Mean, SD) 19.0 (16.5) 21.5 (17.8) 19.6 (19.2) 20.1 (17.5) 20.0 (17.5) F(3,5091)=1.3
Peers influence: ever feel pressure from peers to
 Try cigarettes (%) 21.8 24.2 24.7 19.3 20.1 χ2(3)=8.7 *
 Try drugs (%) 18.5 17.9 17.5 15.4 15.9 χ2(3)=4.3
 Try alcohol (%) 21.6 27.0 25.1 24.4 24.3 χ2(3)=2.9
 Skip school (%) 23.0 26.6 30.3 24.8 25.0 χ2(3)=5.2
 Commit crime (%) 18.5 16.1 19.5 13.6 14.7 χ2(3)=12.1 **
 Work harder (%) 79.0 79.0 78.5 76.2 76.7 χ2(3)=3.1
Dating and sexual activities
 Started dating by age 14 (%) 65.8 71.7 71.7 74.1 73.2 χ2(3)=13.7 **
 Dating 1 or more per week (%) 17.5 21.7 25.9 27.7 26.4 χ2(3)=23.8 **
 Had sex by age 14 (%) 34.2 33.8 36.4 30.6 31.4 χ2(3)=5.4
 Had sex in the past year (%) 59.3 61.5 67.1 63.1 62.8 χ2(3)=2.3

Chi-square test or F-test:

*

p < 0.05;

**

p < 0.01