Table 1.

Between-Day Negative and Positive Affective Instability

	Non-Bulimic Behavior Day	Bulimic Behavior Day	Wald Chi- Square	p	Estimated Cohen’s d	Estimated Hedges’ g	99% CI
	EMM (SE)	EMM (SE)					Lower	Upper
Negative Affect
PAC
Full Day	0.070 (0.006)	0.117 (0.007)	37.47	< 0.001	0.63	0.62	−0.73	−0.30
Pre-Bulimic Behavior	0.090 (0.010)	0.118 (0.011)	4.14	0.042	0.23	0.23	−0.63	0.07
Post-Bulimic Behavior	0.061 (0.006)	0.079 (0.006)	5.15	0.023	0.26	0.26	−0.54	0.03
MSSD
Full Day	38.5 (3.3)	57.4 (4.0)	20.37	< 0.001	0.45	0.45	−0.62	−0.17
Pre-Bulimic Behavior	41.6 (4.8)	40.7 (3.7)	0.04	0.85	0.02	0.02	−0.28	0.32
Post-Bulimic Behavior	40.5 (3.8)	59.3 (4.9)	11.94	0.001	0.44	0.44	−0.67	−0.1
Positive Affect
PAC
Full Day	0.102 (0.007)	0.097 (0.006)	0.57	0.452	0.07	0.07	−0.13	0.24
Pre-Bulimic Behavior	0.120 (0.012)	0.093 (0.010)	3.58	0.059	0.21	0.21	−0.09	0.61
Post-Bulimic Behavior	0.050 (0.006)	0.081 (0.006)	19.05	< 0.001	0.45	0.45	−0.78	−0.2
MSSD
Full Day	55.7 (4.4)	62.7 (4.1)	2.41	0.12	0.14	0.14	−0.31	0.78
Pre-Bulimic Behavior	58.8 (5.0)	57.0 (4.6)	0.09	0.766	0.03	0.03	−0.24	0.30
Post-Bulimic Behavior	50.6 (4.4)	59.3 (5.1)	2.7	0.101	0.16	0.16	−0.41	0.09

Estimated Cohen’s d and estimated Hedges’ g were calculated using estimated marginal means and standard errors.

Abbreviations: PAC = probability of acute change; MSSD = mean squared successive difference; EMM = estimated marginal mean; SE = standard error; 99% CI = 99% confidence interval for effect size, as our a priori alpha was set at 0.01.