Table 2.
Frequency and results of logistic regression analyses, including age as a covariate, for lifetime psychiatric comorbidities and suicidal ideation in 51 females with avoidant/restrictive food intake disorder and 40 females with anorexia nervosa.
| Lifetime KSADS-PL Diagnoses (Binary Criterion Variables)1 | ARFID n (%) |
AN n (%) |
β | SE | Wald χ2 | p-value | OR [95% CI] |
|---|---|---|---|---|---|---|---|
| Depressive and Bipolar-Related Disorders** | 19 (37) | 24 (60) | −.52 | .48 | 1.19 | .276 | .59 [.23, 1.52] |
| Major depressive disorder | 15 (29) | 24 (60) | |||||
| Other specified depressive disorder | 3 (6) | 0 (0) | |||||
| Persistent depressive disorder | 1 (2) | 0 (0) | |||||
| Anxiety, Obsessive-Compulsive, and Trauma-Related Disorders | 27 (53) | 26 (65) | .04 | .51 | .01 | .938 | 1.04 [.39, 2.80] |
| Generalized anxiety disorder | 18 (35) | 18 (45) | |||||
| Panic disorder | 7 (14) | 3 (8) | |||||
| Specific phobia | 5 (10) | 5 (13) | |||||
| Social anxiety disorder | 5 (10) | 15 (38) | |||||
| Separation anxiety disorder | 0 (0) | 4 (10) | |||||
| Other specified anxiety disorder | 1 (2) | 0 (0) | |||||
| Obsessive compulsive disorder | 3 (6) | 2 (5) | |||||
| Posttraumatic stress disorder | 4 (8) | 2 (5) | |||||
| Neurodevelopmental, Disruptive, and Conduct Disorders2 | 7 (14) | 1 (3) | |||||
| Oppositional defiant disorder | 1 (2) | 0 (0) | |||||
| Autism spectrum disorder | 1 (2) | 0 (0) | |||||
| Attention deficit/hyperactivity disorder | 4 (8) | 1 (3) | |||||
| Other specified attention deficit/hyperactivity disorder | 2 (4) | 0 (0) | |||||
| Suicidality3** | 5 (10) | 14 (35) | −1.75 | .67 | 6.87 | .009 * | .18 [.05, .64] |
Note. ARFID – avoidant/restrictive food intake disorder; AN – anorexia nervosa; KSADS-PL – Kiddie Schedule for Affective Disorders and Schizophrenia – Present and Lifetime Version; SE – standard error; OR – odds ratio. Anorexia nervosa is the reference group.
Individual diagnoses with no test statistics reported indicate those that did not have sufficient representation in all cells for logistic regression (i.e., > 1 with less than 20% of cells having expected frequencies <5 [Tabachnick & Fidell, 2013]) or those under broad KSADS-PL categories that were not significant (i.e., Anxiety, Obsessive-Compulsive, and Trauma-Related Disorders) and were therefore not analyzed.
Assumptions for logistic regression analysis were not met and therefore, this test was not performed on this category of disorders.
The self-report measures we used to assess suicidality reflect the past two weeks.
Bolded p-values indicate those that met the threshold for statistical significance of p < .05.
Represents KSADS-PL categories that were statistically significant in chi-square tests of independence that omitted age as a covariate.