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Sick and Tired: Understanding and Managing Sleep Difficulties in ...

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Figure 8. Scree plot for the exploratory factor analysis of the PSS<br />

5<br />

4<br />

3<br />

Eigenvalue 6<br />

2<br />

1<br />

0<br />

1<br />

2<br />

3<br />

4<br />

5<br />

6<br />

7<br />

Component Number<br />

8<br />

9<br />

10<br />

The two factor structure of the PSS-14, identified by Hewitt et al (1992), perceived<br />

distress <strong>and</strong> perceived cop<strong>in</strong>g was supported by this study. The eigen value for a one<br />

factor structure was 5.86 (expla<strong>in</strong><strong>in</strong>g 41.87% of the variance) with two factors the eigen<br />

value was 1.80 (expla<strong>in</strong><strong>in</strong>g 54.71% of the variance). With three factors <strong>and</strong> higher, the<br />

eigen values were

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