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Volume 11, Number 8—August 2005

Dispatch

Posttraumatic Stress after SARS

Kitty K. Wu*Comments to Author , Sumee K. Chan†, and Tracy M. Ma‡
Author affiliations: *Caritas Medical Centre, Hong Kong; †Princess Margaret Hospital, Hong Kong; ‡Kwong Wah and Wong Tai Sin Hospitals, Hong Kong

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Table 2

Summary of multiple regression analyses of IES-R and HADS subscales (N = 131)*

Predictor variables B ß sr2 R R2 Overall F
Regression analysis to predict IES–R intrusion score
Subjective threat 0.12 0.18 0.03† 0.22‡
Emotional support –0.17 –0.18 0.03† –0.21‡
SaO2 –0.04 –0.22 0.04† –0.26‡ 0.13 F3, 127 = 6.57§
Regression analysis to predict IES–R hyperarousal score
Subjective threat 0.13 0.19 0.04† 0.22‡
Emotional support –0.14 –0.15 0.02 –0.17†
SaO2 –0.02 –0.13 0.02 –0.16† 0.09 F3, 127 = 4.15†
Regression analysis to predict IES–R avoidance score
Subjective threat 0.15 0.22 0.05‡ 0.26‡
Emotional support –0.17 –0.19 0.03† –0.22‡
SaO2 –0.05 –0.24 0.06‡ –0.29§ 0.17 F3, 127 = 8.62§
Regression analysis to predict HADS anxiety score
Subjective threat 0.73 0.18 0.03† 0.20‡
Emotional support –0.77 –0.13 0.02 –0.15†
SaO2 –0.16 –0.12 0.01 –0.15† 0.07 F3, 127 = 3.43*
Regression analysis to predict HADS depression score
Subjective threat 0.24 0.06 0.00 0.09
Emotional support –10.03 –0.18 0.03† –0.20†
SaO2 –0.18 –0.14 0.02 –0.16† 0.06 F3, 127 = 20.91†

*IES-R, Impact of Event Scale – Revised; HADS, Hospital Anxiety and Depression Scale, Subjective threat, subjective sense of threat; emotional support, number of persons one could talk to and share worries with; SaO2, lowest level of blood oxygen saturation during hospitalization.
†p<0.05.
‡p<0.01.
§p<0.001.

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