Explainable statistical learning in public health for policy development: the case of real-world suicide data

Table 3 Principal-component analysis: pattern matrix

	Component
	1	2	3
Unemployment	0.87	−0.19	0.01
Estimated prevalence of opiates and/or crack cocaine use	0.86	−0.04	− 0.08
Alcohol-related hospital admission	0.83	0.12	0.06
Children leaving care	0.82	− 0.09	− 0.03
Severe mental illness recorded prevalence	0.75	−0.37	− 0.03
Self-reported well-being - low happiness	0.71	0.11	0.21
Children in the youth justice system	0.69	0.07	−0.15
Adults in treatment at specialist alcohol misuse services	0.63	0.32	−0.06
inverse People living alone	−0.48	−0.21	0.19
Self-reported well-being - high anxiety	0.48	−0.01	0.21
Domestic abuse incidents	0.46	0.07	−0.02
Emergency hospital admissions for intentional self-harm	0.25	0.76	0.03
Depression recorded prevalence	0.04	0.76	−0.03
Statutory homelessness	0.22	−0.76	−0.04
Marital breakup	0.20	0.61	0.10
Adult carers who have as much social contact as they would like (all ages)	−0.07	0.56	0.04
Adult social-care users who have as much social contact as they would like	0.00	0.52	−0.11
Successful completion of drug treatment - non-opiate users	0.12	0.08	0.89
Successful completion of alcohol treatment	−0.04	0.18	0.80
Successful completion of drug treatment - opiate users	−0.09	−0.27	0.64

In an initial three-factor solution, social care mental health clients receiving services loaded on none of the components. Therefore this variable was removed from the final analysis
Figures in bold indicate main loadings

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