Table 2.

MEDLINE search strategy and main results

Search term	Search term	Search term	No of results	Excluded: not relevant/duplicates	Included for further screening
‘primary care’ AND	‘social determinants of health’		389	321	68
	‘social welfare’		119	112	17
	‘social needs’		160	136	24
	‘social prescribing’		44	13	31
	‘food insecurity’ AND	‘screening’	42	14	28
	‘social needs screening’		8	0	8
	‘welfare rights’		7	0	7
	‘housing insecurity’		6	6	0
	‘income security’		5	5	0
	‘social assistance’		17	17	0
	‘link worker’		12	12	0
‘primary care’ OR ‘family practice’ OR ‘health cent*’ AND	‘poverty’ AND	‘screening’	394	387	7
	‘poverty’ AND	‘intervention’	537	528	9
	‘social determinants of health’ AND	‘screening’	97	75	22
	‘social determinants of health’ AND	‘intervention’	86	86	0
	‘social needs’ AND	‘intervention’	38	36	2
	‘housing’ AND	‘intervention’	104	104	0
	‘food security’ OR ‘food insecurity’ AND	‘intervention’	387	387	0
	‘economic stability’		5	5	0
	‘employment’ AND	‘intervention’	212	212	0
	‘social needs’ AND	‘screening’	31	31	0
Total			2700	2487	223