Could a brief assessment of negative emotions and self-esteem identify adolescents at current and future risk of self-harm in the community? A prospective cohort analysis

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
						CATS personal failure	−0.81
						RSE	−0.81
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
						RCADS depression	0.72
						RCADS panic	0.81
						SMFQ	0.81
Positive self-esteem	5	0.82	10.51	2.66	0-15	RSE	0.86

ISSN: 1471-2458