Table 3.
Multinomial Logistic Regression of Suicidal Ideation (SI) or Suicidal Behaviors (SB) versus Non-Suicidal Self-Injury (NSSI) versus No SI/SB/NSSI by Psychopathology and Severity Characteristics Covarying for Age, Gender, and Major Deprssive Disorder (MDD) Severity
| Total (N=314) |
No SI/SB/NSSI (n=203) |
NSSI (n=50) |
SI/SB nN=61) |
Omnibus Test | SI/SB vs. No |
NSSI vs. No |
SI/SB vs. NSSI |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diagnoses | % | n | % | n | % | n | % | n | χ2 | p | OR (95% CI) | OR (95% CI) | OR (95% CI) |
| MDD or MDD NOS | 75.8 | 238/314 | 69.0 | 140/203 | 86.0 | 43/50 | 90.2 | 55/61 | 4.11 | 0.1278 | |||
| ADHD | 28.0 | 72/257 | 27.9 | 44/158 | 24.4 | 11/45 | 31.5 | 17/54 | 0.68 | 0.7112 | |||
| ODD | 48.2 | 123/255 | 42.3 | 66/156 | 65.9 | 29/44 | 50.9 | 28/55 | 5.89 | 0.0527 | |||
| CD | 2.8 | 7/251 | 2.6 | 4/153 | 2.3 | 1/44 | 3.7 | 2/54 | 0.94 | 0.6247 | |||
| PTSD | 2.8 | 7/251 | 2.6 | 4/153 | 2.3 | 1/44 | 3.7 | 2/54 | 1.01 | 0.6029 | |||
| Diagnostic Severity | Mean | SD | Mean | SD | Mean | SD | Mean | SD | χ2 | p | OR (95% CI) | OR (95% CI) | OR (95% CI) |
| MDD core scorea | 4.21 | 2.02 | 3.92 | 2.04 | 4.72 | 1.93 | 4.77 | 1.83 | 11.76 | 0.0028 | 1.25 (1.07, 1.46)b | 1.25 (1.05, 1.47) b | 1.00 (0.81, 1.23) |
| SI/Behaviors sum score | 0.47 | 1.20 | 0.00 | 0.00 | 0.00 | 0.00 | 2.43 | 1.66 | -- | -- | |||
| Total (N=254) |
No SI/SB/NSSI (n=156) |
NSSI (n=44) |
SI/SB (n=54) |
Omnibus Test | SI/SB vs. No |
NSSI vs. No |
SI/SB vs. NSSI |
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| Mean | SD | Mean | SD | Mean | SD | Mean | SD | χ2 | p | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Irritability/temper sum score | 6.80 | 1.73 | 6.61 | 1.74 | 7.50 | 1.36 | 6.80 | 1.87 | 6.85 | 0.0326 | 1.08 (0.89, 1.30) | (1.08, 1.76) b | 0.78 (0.59, 1.03) |
| Total (N=274) |
No SI/SB/NSSI (n=169) |
NSSI (n=47) |
SI/SB (n=58) |
Omnibus Test | SI/SB vs. No |
NSSI vs. No |
SI/SB vs. NSSI |
||||||
| Diagnostic Severity | Mean | SD | Mean | SD | Mean | SD | Mean | SD | χ2 | p | OR (95% CI) | OR (95% CI) | OR (95% CI) |
| CBCL Internalizing | 66.54 | 8.41 | 66.34 | 8.71 | 67.66 | 6.98 | 66.21 | 8.65 | 0.97 | 0.6149 | |||
| CBCL Externalizing | 65.95 | 10.19 | 64.60 | 10.45 | 69.53 | 7.87 | 66.95 | 10.43 | 7.74 | 0.0209 | 1.02 (0.99, 1.06) | 1.05 (1.01, 1.09) b | 0.97 (0.93, 1.02) |
| Total (N=314) |
No SI/SB/NSSI (N=203) |
NSSI (N=50) |
SI/SB (N=61) |
Omnibus Test | SI/SB vs. No |
NSSI vs. No |
SI/SB vs. NSSI |
||||||
| MDD Symptoms | % | n | % | n | % | n | % | n | χ2 | p | OR (95% CI) | OR (95% CI) | OR (95% CI) |
| Depressed mood | 86.6 | 272 | 82.8 | 168 | 94.0 | 47 | 93.4 | 57 | 7.74 | 0.0208 | 3.68 (1.19, 11.39) | 3.13 (0.92, 10.68) | 1.18 (0.24, 5.76) |
| Anhedonia, boredom, or amotivation | 53.2 | 167 | 51.7 | 105 | 54.0 | 27 | 57.4 | 35 | 0.84 | 0.6561 | |||
| Boredom | 26.8 | 84 | 23.2 | 47 | 26.0 | 13 | 39.3 | 24 | 3.75 | 0.1531 | |||
| Anhedonia | 39.0 | 122 | 37.6 | 76 | 44.0 | 22 | 39.3 | 24 | 0.72 | 0.6967 | |||
| Amotivation | 40.1 | 126 | 39.4 | 80 | 40.0 | 20 | 42.6 | 26 | 0.41 | 0.8153 | |||
| Insomnia or hypersomnia | 55.4 | 174 | 53.2 | 108 | 68.0 | 34 | 52.5 | 32 | 3.13 | 0.2087 | |||
| Total (N=314) |
No SI/SB/NSSI (n=203) |
NSSI (n=50) |
SI/SB nn=61) |
Omnibus Test | SI/SB vs. No |
NSSI vs. No |
SI/SB vs. NSSI |
||||||
| MDD Symptoms | % | n | % | n | % | n | % | n | χ2 | p | OR (95% CI) | OR (95% CI) | OR (95% CI) |
| Fatigue, lack of energy, or tiredness | 32.2 | 101 | 31.0 | 63 | 38.0 | 19 | 31.2 | 19 | 1.10 | 0.5766 | |||
| Decreased concentration or indecision | 45.4 | 142 | 39.6 | 80 | 50.0 | 25 | 60.7 | 37 | 7.44 | 0.0243 | 2.26 (1.21, 4.19) b | 1.56 (0.83, 2.92) | 1.45 (0.66, 3.20) |
| Appetite or weight change | 31.6 | 99 | 25.7 | 52 | 38.0 | 19 | 45.9 | 28 | 10.56 | 0.0051 | 2.74 (1.44, 5.19) b | 1.78 (0.92, 3.42) | 1.54 (0.69, 3.44) |
| Psychomotor agitation/retardation | 19.2 | 154 | 46.0 | 93 | 58.0 | 29 | 52.5 | 32 | 2.41 | 0.2994 | |||
| Feelings of worthlessness | 57.5 | 180 | 53.0 | 107 | 52.0 | 26 | 77.1 | 47 | 5.51 | 0.0636 | |||
| Excessive/inappropriate guilt | 44.4 | 139 | 41.6 | 84 | 54.0 | 27 | 45.9 | 28 | 2.74 | 0.2539 | |||
| Recurrent thoughts of death | 20.1 | 63 | 16.8 | 34 | 12.0 | 6 | 37.7 | 23 | 16.90 | 0.0002 | 3.90 (1.93, 7.86) b | 0.70 (0.27, 1.77) | 5.61 (1.97, 15.99) b |
| Death themes in play | 11.8 | 37 | 7.4 | 15 | 16.0 | 8 | 23.0 | 14 | 8.05 | 0.0179 | 3.16 (1.35, 7.39) b | 2.39 (0.94, 6.09) | 1.33 (0.47, 3.71) |
| Non-suicidal self-injurious behavior | 21.3 | 67 | 0.0 | 0 | 100.0 | 50 | 27.9 | 17 | -- | -- | |||
Note: OR = odds ratio
a
MDD core score did not include suicide symptom; Models of MDD symptoms only covaried for age and gender.
b
Significant after false discovery rate correction