Table 4.
Weighted distribution and conditional probability of Serious Emotional Disturbance (SED)a prevalence, persistence, and onsets as a function of stress exposure
| Low Stressa | Moderate Stressa | High Stressa | ||||
|---|---|---|---|---|---|---|
| Est | (SE) | Est | (SE) | Est | (SE) | |
| H-SED | ||||||
| Baseline | 3.5 | (1.1) | 16.8 | (3.3) | 30.0 | (8.1) |
| χ2 2=22.5, p<.001b | ||||||
| Follow-up | 3.4 | (1.0) | 6.5 | (2.0) | 41.9 | (9.0) |
| χ2 2=13.3, p<.001 | ||||||
| t (p-value)c | 0.1 | (.90) | 3.2 f | (<.001) | -1.3 | (.20) |
| Persistenced | 17.8 | (11.5) | 19.7 | (8.3) | 72.9 | (14.7) |
| χ2 2=6.9, p=.039 | ||||||
| Delayed Onsete | 2.4 | (0.9) | 3.5 | (1.6) | 29.2 | (10.1) |
| χ2 2=5.6, p=.06 | ||||||
| NH-SED | ||||||
| Baseline | 4.8 | (1.4) | 11.3 | (3.0) | 0.0 | (0.0) |
| χ2 2=3.7, p=.06 | ||||||
| Follow-up | 3.4 | (1.2) | 6.1 | (1.9) | 5.9 | (4.2) |
| χ2 2=1.7, p=.44 | ||||||
| t (p-value) | 0.7 | (.49) | 1.9 | (.06) | -0.8 | (.43) |
| Persistence | 6.9 | (7.0) | 32.5 | (13.7) | 0.0 | (0.0) |
| χ2 2=2.8, p=.10 | ||||||
| Delayed Onset | 3.2 | (1.2) | 2.9 | (1.3) | 2.7 | (2.8) |
| χ2 2=0.04, p=.98 | ||||||
| (n) | (337) | (194) | (45) | |||
Note: H-SED = SED attributable to Hurricane Katrina; NHSED = SED unrelated to Hurricane Katrina.
a
High, moderate, and low stress groups were created based on reports of hurricane-related and ongoing stress. See the “Results” section for details.
b
Chi-square test of the association between stress exposure group and SED.
c
Within-respondent paired comparison t-test.
d
Percentage of SED cases at follow-up that had SED at baseline.
e
Percentage of SED cases at follow-up that did not have SED at baseline.
f
Significant at the .05 level, two-sided test.