Skip to main content
. Author manuscript; available in PMC: 2021 Feb 1.
Published in final edited form as: J Psychiatr Res. 2019 Nov 22;121:173–181. doi: 10.1016/j.jpsychires.2019.11.015

Table 3.

Summary of Mixed-Design ANCOVA Results.

Outcome Variables Effect df F p ηp2
Unextracted Oxytocin Concentration Group 2,80 .584 .560 .014
Time 1,80 1.750 .190 .021
Group x Time 2,80 4.877 .010 .109
Extracted Oxytocin Concentration Group 2,77 1.52 .224 .038
Time 1,77 .34 .560 .004
Group x Time 2,77 1.61 .207 .040
Desire for Emotional Support Group 2,96 .253 .777 .005
Time 1,96 5.606 .020 .055
Group x Time 2,96 4.260 .017 .082
Thwarted Belongingness Group 2,96 22.154 <.001 .316
Time 1,96 .745 .390 .008
Group x Time 2,96 .809 .448 .017
Perceived Burdensomeness Group 2,96 13.802 <.001 .223
Time 1,96 .264 .608 .003
Group x Time 2,96 .550 .579 .011

Note. Oxytocin concentration was measured in pg/ml. Desire for Emotional Support was measured using the Interpersonal Orientation Scale. Thwarted Belongingness and Perceived Burdensomeness were measured using the Interpersonal Needs Questionnaire-15. Significant effects in bold.

Mixed-design ANCOVA models with group as the between-subjects measure (3 levels: suicide attempters, depressed controls, healthy controls) and time as the within-subjects measure (2 levels: pre and post social exclusion) were used to evaluate changes in oxytocin concentrations, desire for emotional support, and thwarted belongingness, and perceived burdensomeness. All models included the following covariates: negative affect at pretest, negative affect at posttest, and change in positive affect (PANAS).