Acupoint Injection for Nonspecific Chronic Low Back Pain: A Systematic Review and Meta-Analysis of Randomized Controlled Studies

Table 1

Search strategy for Medline via PubMed.

No.	Search items
#1	“dorsalgia” [tw]
#2	“Back Pain”[Mesh]
#3	(“backache” or “back pain”) [tw]
#4	(“lumbar adj pain”) [tw]
#5	“coccyx”[tw]
#6	“coccydynia”[tw]
#7	“sciatica”[tw]
#8	“sciatic neuropathy” [Mesh]
#9	“spondylosis”[tw]
#10	“lumbago”[tw]
#11	“back disorder$”[tw]
#12	“Back Muscles”[Mesh]
#13	#1 OR #2 OR #3 OR #4 OR #5 OR #6 OR #7 OR #8 OR #9 OR #10 OR #11 OR #12
#14	“Acupuncture Therapy”[Mesh] or “Acupuncture, Ear”[Mesh] or “Acupuncture Points”[Mesh] or “Acupuncture Analgesia”[Mesh] or “Acupuncture”[Mesh]
#15	“Acupressure”[Mesh]
#16	“Electroacupuncture”[Mesh]
#17	“Meridians”[Mesh]
#18	“Moxibustion”[Mesh]
#19	“Acupuncture”[tw]
#20	“acupressure$”[tw]
#21	(“electroacupuncture” or “electro acupuncture” or “electro-acupuncture”) [tw]
#22	“meridian$”[tw]
#23	“mox$”[tw]
#24	“needling”[tw]
#25	(“acu-point$” or “acupoint$”)[tw]
#26	“acupoint$”[tw]
#27	“shu”[tw]
#28	(“shiatsu” or “tui na”) [tw]
#29	#14 OR #15 OR #16 OR #17 OR #18 OR #19 OR #20 OR #21 OR #22 OR #23 OR #24 OR #25 OR #26 OR #27 OR #28
#30	“injection” [tw]
#31	“injections” [tw]
#32	#30 OR #31
#33	#29 AND #32
#34	randomized controlled trial [pt]
#35	controlled clinical trial [pt]
#36	randomized [tiab]
#37	placebo [tiab]
#38	clinical trials as topic [mesh: noexp]
#39	randomly [tiab]
#40	trial [ti]
#41	#34 OR #35 OR #36 OR #37 OR #38 OR #39 OR #40
#42	animals [mh] NOT humans [mh]
#43	#41NOT #42
#44	#13 AND #33 AND #43