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Table 1 Variables created by combining other variables

From: Health service use in families where children enter public care: a nested case control study using the General Practice Research Database

Title of composite variable Created from individual variables
Any social service input Social service input described in the maternal clinical events file
Social service input in child clinical file
Financial issues Financial issues in maternal clinical events file
Financial issues in child clinical file
Any nursing input Practice nurse involvement with mother in clinical events file
Health visitor involvement recorded in maternal clinical events file
District nurse involvement with mother in clinical events file
Heath Visitor input in child clinical file,
District or Practice nurse input in child clinical file
Any non attendance at primary or secondary care Maternal non-attendance at primary or secondary care
Maternal non attendance for cervical smear
Any non attendance at primary or secondary care codes in child clinical file
Immunisation data incomplete in child clinical file
Child mental illness codes ADHD treatment in child prescription file
Hypnotic in child prescription file
Antipsychotic in child prescription file
Referral to Child and Adolescent Mental Health Services in referral file
Child mental illness codes in child clinical file
Child behavioural issues in child clinical file,
Antidepressant in child prescription file.
Maternal mental illness codes Maternal depression in clinical events file
Maternal prescription of an antidepressant
Maternal bipolar disorder in clinical events file
Maternal prescription for treatment of bipolar disorder
Maternal referral to psychiatry
Maternal mental illness in clinical events file
Concern about maternal psychological health
Maternal prescription of anxiolytic
Maternal psychosis in clinical events file
Maternal prescription of an antipsychotic medication
Maternal alcohol misuse Maternal alcohol misuse
Maternal prescription for treatment of alcohol misuse
Sentinel conditions for alcohol misuse in maternal file
Maternal drug misuse Maternal drug misuse in clinical events file
Prescription of treatment for opiod misuse in maternal therapy file
Sentinel conditions for drug misuse in maternal file
Domestic abuse Domestic abuse in maternal clinical events file
Sentinel conditions for trauma in maternal file
Maternal depression Maternal depression in clinical events file
Maternal prescription of an antidepressant
Maternal bipolar disorder Maternal bipolar disorder in clinical events file
Maternal prescription for treatment of bipolar disorder
Maternal psychosis Maternal psychosis in clinical events file
Maternal prescription of an antipsychotic medication
Maternal contraception Maternal contraception in clinical events file
Maternal prescription of contraceptive