#	Query	Results
S54	S49 OR S50 OR S51 OR S52 Exclude MEDLINE records	259
S53	S49 OR S50 OR S51 OR S52	1,199
S52	S4 AND S17 AND S40 AND S48	1,065
S51	S17 AND S27 AND S48	245
S50	S8 AND S18 AND S48	48
S49	S4 AND S8 AND S17 AND S48	537
S48	S41 OR S42 OR S43 OR S44 OR S45 OR S46 OR S47	177,524
S47	TI trial or multicenter or "multi center" or multicentre or "multi centre"	35,740
S46	TI ( randomis* or randomiz* or randomly) OR AB ( randomis* or randomiz* or randomly)	99,382
S45	(MH "Multicenter Studies")	8,673
S44	(MH "Clinical Trials")	80,747
S43	(MH "Randomized Controlled Trials")	20,909
S42	PT clinical trial	51,624
S41	PT randomized controlled trial	24,980
S40	S28 OR S29 OR S30 OR S31 OR S32 OR S33 OR S34 OR S35 OR S36 OR S37 OR S38 OR S39	956,442
S39	TI ( (role or competence or performance or skill or skills) N3 (nurse or nurses or midwife or midwives) ) OR AB ( (role or competence or performance or skill or skills) N3 (nurse or nurses or midwife or midwives) )	16,049
S38	(MH "Health Resource Utilization/MA")	890,003
S37	(MH "Health Care Delivery")	23,166
S36	(MH "Outcome Assessment")	17,332
S35	(MH "Task Performance and Analysis")	5,148
S34	(MH "Professional Competence")	8,480
S33	(MH "Nursing Skills")	2,663
S32	(MH "Clinical Competence")	18,541
S31	(MH "Professional Autonomy")	3,105
S30	(MH "Physician's Role")	5,524
S29	(MH "Nursing Role")	37,124
S28	(MH "Professional Role")	18,725
S27	S19 or S20 or S21 or S22 or S25 or S26	45,412
S26	TI ( "nurse led" or "nurse managed" or "nurse run" ) OR AB ( "nurse led" or "nurse managed" or "nurse run" )	2,769
S25	S23 AND S24	3,814
S24	TX ( nurse or nurses or midwife or midwives ) OR TX ( nurse or nurses or midwife or midwives )	450,292
S23	TI ( substitut* or delegat* or (task* N2 shift*) or (change* N2 role*) or (expand* N2 role*) or (extend* N2 role*) or (expand* N2 responsabilit*) or (extend* N2 responsabilit*) or (expand* N2 task*) or (extend* N2 task*) ) OR AB ( substitut* or delegat* or (task* N2 shift*) or (change* N2 role*) or (expand* N2 role*) or (extend* N2 role*) or (expand* N2 responsabilit*) or (extend* N2 responsabilit*) or (expand* N2 task*) or (extend* N2 task*) )	12,387
S22	(MH "Nursing Role")	37,124
S21	(MH "Midwives+/MA/UT")	179
S20	(MH "Nurses+/MA/UT")	2,019
S19	(MH "Delegation of Authority")	1,524
S18	(MH "Community Health Nursing+")	21,668
S17	S9 OR S10 OR S11 OR S12 OR S13 OR S14 OR S15 OR S16	125,143
S16	TI ( "primary care" or "primary healthcare" or "primary health care" or primary W0 practice* or general W0 practice* or family W0 practice* or outpatient* or "ambulatory care" or "community care" or community W0 health* or "community medicine" or "home care" ) OR AB ( "primary care" or "primary healthcare" or "primary health care" or primary W0 practice* or general W0 practice* or family W0 practice* or outpatient* or "ambulatory care" or "community care" or community W0 health* or "community medicine" or "home care" )	78,393
S15	(MH "Home Health Care")	14,528
S14	(MH "Community Medicine")	36
S13	(MH "Community Health Services")	11,175
S12	(MH "Ambulatory Care Facilities+")	8,574
S11	(MH "Ambulatory Care")	6,117
S10	(MH "Family Practice")	10,420
S9	(MH "Primary Health Care")	30,073
S8	S5 OR S6 OR S7	114,891
S7	TI ( physician* or doctor or doctors or (general W0 practitioner*) or GP or GPs or (family W0 practitioner*) or "conventional care" or "usual care" or "treatment as usual" ) OR AB ( physician* or doctor or doctors or (general W0 practitioner*) or GP or GPs or (family W0 practitioner*) or "conventional care" or "usual care" or "treatment as usual" )	91,989
S6	(MH "Physicians, Family")	8,240
S5	(MH "Physicians")	31,958
S4	S1 OR S2 OR S3	301,180
S3	TI ( nurse or nurses or midwife or midwives ) OR AB ( nurse or nurses or midwife or midwives )	216,144
S2	(MH "Midwives+")	8,346
S1	(MH "Nurses+")	151,395