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Appendix Table 2. Factors predicting IES
and QOL scores (stepwise linear regression models) (survey 2 data)*
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β coefficient (SE)
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DV = IES subscale scores
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DV = QOL (SF-36) subscale scores
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Avoidance
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Intrusion
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Hyperarousal
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Mental health
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Vitality
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Stage 1 (Stepwise selection of significant sociodemographic
factors)
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Female sex (ref = male)
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NS
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1.62† (0.48)
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1.07† (0.25)
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NS
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–4.66† (1.47)
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Age group, y (ref = 18–24)
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25–34
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NS
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NS
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NS
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NS
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NS
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35–49
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NS
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NS
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NS
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NS
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NS
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>50
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NS
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NS
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NS
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NS
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NS
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Education level 10–11 y (ref = <9 y)
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NS
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NS
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NS
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NS
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NS
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Pre-university
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–1.27† (0.45)
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NS
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NS
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NS
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NS
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University or higher
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NS
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NS
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NS
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NS
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NS
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Marital status (ref = single)
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Currently married or lived together
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NS
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1.34† (0.49)
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0.72† (0.26)
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NS
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NS
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Divorced or widow
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NS
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NS
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NS
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NS
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–12.73‡ (5.63)
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Employment status (ref = full time)
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Part time
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NS
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NS
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NS
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NS
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NS
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Unemployed
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NS
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NS
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NS
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NS
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NS
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Housewife
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NS
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NS
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NS
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–6.03† (1.82)
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NS
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Student
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NS
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NS
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NS
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5.97† (2.17)
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4.81‡ (2.31)
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Retired or other
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NS
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NS
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NS
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NS
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NS
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Religion (ref = no)
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Christian
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NS
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NS
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NS
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NS
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NS
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Buddhist
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NS
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2.98† (0.88)
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2.43† (0.46)
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–6.56† (2.51)
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NS
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Other
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NS
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NS
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NS
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NS
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NS
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Stage 2 (Stepwise selection of psychological variables
adjusting for univariately significant sociodemographic factors)
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Feel horrified because of SARS (ref = moderately
to strongly disagree)
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Agree or strongly agree
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–
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–
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0.87‡ (0.30)
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–
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–
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Feel apprehensive because of SARS (ref = moderately
to strongly disagree)
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Agree or strongly agree
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1.13† (0.42)
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2.47† (0.48)
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0.97† (0.28)
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–8.52† (1.37)
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–5.68† (1.58)
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Felt helpless about SARS (ref = moderately to strongly
disagree)
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Agree or strongly agree
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1.12† (0.40)
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–
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–
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–2.82‡ (1.28)
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–3.78‡ (1.47)
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Worried about oneself or family member contracting
SARS (ref = moderately worried to not worried)
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Worried or very much worried
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1.47† (0.40)
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2.35† (0.45)
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1.31† (0.24)
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–4.51† (1.27)
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–3.45‡ (1.48)
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Increased work stress because of SARS (ref = same
to much decreased)
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Increased or much increased
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NS
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1.58† (0.47)
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0.74‡ (0.25)
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–4.96† (1.35)
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NS
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Increased financial stress because of SARS (ref
= same to much decreased)
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Increased or much increased
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–
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–
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–
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–
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–3.15‡ (1.55)
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Increased family stress because of SARS (ref = same
to much decreased)
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Increased or much increased
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1.28† (0.46)
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1.09‡ (0.53)
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0.83‡ (0.27)
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–5.69† (1.51)
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–3.96‡ (1.77)
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Change in social life because of SARS (ref = same
to much improved)
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Worse or much worse
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–
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1.27‡ (0.50)
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1.15† (0.25)
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–
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–
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Change in family members' emotional states because
of SARS (ref = same to much improved)
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Worse or much worse
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1.16‡ (0.46)
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2.21† (0.55)
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–
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–6.20† (1.48)
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–4.48† (1.70)
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Adjusted R2
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0.081
|
0.226
|
0.243
|
0.227
|
0.106
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Range of scores
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0–35
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0–35
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0–20
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6–30
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4–24
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*IES, impact of event scale; QOL, quality of life;
DV, dependent variable; SF36, Medical Outcomes Study 36-Item Short
Form Health Survey; SE, standard error; ref, referent; NS, not selected
in Stage 1 stepwise linear regression analysis; –, not selected
in Stage 2 stepwise linear regression analysis; SARS, severe acute
respiratory syndrome. Perceived severity of SARS was entered into
the stage 2 analysis, but it was not selected by any of the models.
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†p < 0.01.
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‡p < 0.05.
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