The development and validation of a prognostic model to PREDICT Relapse of depression in adult patients in primary care: protocol for the PREDICTR study

Table 3 Summary and categorisation of exploratory predictors

Variable	Type of data	Method of measurement	Original categories (in RCTs)	New categories (PREDICTR)	Range of values and coding of predictors
Age	Continuous	RCT data collection/self report	Not applicable	Not applicable
Gender	Categorical	RCT data collection/self report	Unchanged	Unchanged	Men=0; Women=1
Ethnicity	Categorical	RCT data collection/self report	White	White	White=0; Other=1
			Mixed	Other
			Black
			Asian
			Chinese
			Other
Employment status	Categorical	RCT data collection/self report	Employed (Full time or part time)	Employed/not seeking employment	Unemployed=0; Employed or not seeking employment=1
			Student
			Retired
			House-person
			Other
			Unemployed job-seeker	Unemployed
			Unemployed due to ill-health	Unemployed
Relationship status	Categorical	RCT data collection/self report	Married/civil partnership/cohabiting/relationship	In a relationship	Single=0; In a relationship=1
			Single	Single
			Separated
			Divorced
			Widowed
Multi-morbidity	Categorical	RCT data collection/self report	None	No long-term physical health condition	No long-term physical health conditions=0; One or more long-term physical health conditions=1
			Mental health only	No long-term physical health condition
			Diabetes	One or more long-term physical health conditions
			Asthma or COPD
			Degenerative or inflammatory arthritis
			Heart Disease
			Stroke
			Cancer
			Kidney Disease

ISSN: 2397-7523