Table 3. Binge Eating: Wave 1 Contrasts.

	Binge Eating Trajectory Group Means (SD) or Percentages				t-tests or Chi-Square
Risk Factor	None	Decreasing	Increasing	High, Steady	Contrast 1 (None vs. others): df = 936	Contrast 2 (None vs. Increasing): df = 625	Contrast 3 (Increasing vs. Decreasing and High): df = 489
NU-1	2.08 (0.66)	2.40 (0.64)	2.31 (0.71)	2.43 (0.68)	t=6.44**	t=3.31**	t=1.41
NA-1	1.96 (0.66)	2.35 (0.82)	2.27 (0.77)	2.21 (0.85)	t=6.26**	t=4.17**	t=0.13
EE-1	1.98 (1.13)	2.84 (1.56)	2.09 (1.19)	2.74 (1.55)	t=6.39**	t=0.78	t=4.70**
TE-1	2.86 (1.55)	3.55 (1.67)	2.83 (1.51)	3.76 (1.67)	t=4.62**	t=0.218	t=4.44**
Pubertal Onset	22.7%	24.6%	23.2%	29.4%	χ2 =0.68	χ2 =0.01	χ2 =0.84

Note. NU, negative urgency; NA, negative affect; EE, eating expectancies; TE, thinness expectancies; each number following the variable represents the wave in which the data was collected (i.e., NU-1 = Negative Urgency, wave 1);

^**p<.001. For pubertal onset, the percentage positive at wave 1 in each group is reported. All contrasts are t-tests with the exception of those with pubertal onset, which are chi square tests of independence.