Table 2

Scale characteristics of the factors retained following Principal Components Analysis
Factor Number of items Alpha Scale mean Scale SD Range of summed total Pearson’s correlation with related original measures
Total score (personal failure, physical symptoms of anxiety/depression and positive self-esteem) 14 0.87 9.06 6.44 0-42 SMFQ 0.80
RCADS total 0.78
CATS personal failure 0.75
−0.81
RSE
Personal failure 3 0.86 1.72 2.53 0-12 CATS personal failure 0.93
Generalised anxiety 5 0.83 3.79 2.88 0-15 RCADS generalised anxiety disorder 0.79
Physical symptoms of anxiety and depression 6 0.82 2.95 2.97 0-15 RCADS depression 0.88
0.72
RCADS panic 0.81
SMFQ
Positive self-esteem 5 0.82 10.51 2.66 0-15 RSE 0.86

Phillips et al.

Phillips et al. BMC Public Health 2013 13:604   doi:10.1186/1471-2458-13-604

Open Data