Table 4.

Reported Adverse Events at 984 First Visits

Adverse events	Total # of adverse eventsc	% in First visits/% in return visitsd	Detailse
Subcutaneous bleeding & hematomas	23 (2.3%)	0.88	≥ 2 cm (4), unknown (19)
Discomfort	19 (1.9%)	2.80	Feeling of fatigue (9), drowsiness (6), dizziness (2), nausea (1), hot flash (1), faint (1), multiple (1)
Residual pain of insertion points	10 (1.0%)	1.58	Weak pain (7), strong pain (3)
Pain on insertion/stimulationa	10 (1.0%)	1.95	Pain during insertion (5), pain during retaining (3), pain during electroacupuncture (2)
Bleedingb	10 (1.0%)	2.07	≥ 10 sec (3), ≥20 sec (4), ≥30 sec (3)
Aggravation of symptoms	3 (0.3%)	1.59	Pain (2): low-back pain (2)
			Other symptoms (1)
Burn injury	1 (0.1%)	0.58	Cause: heat perception moxibustion (1)
			Degree: second degree (superficial) (1)
Others	2 (0.2%)	1.56	Strong acupuncture sensation & heavy sensation (1), diarrhea (1)
Cutaneous inflammation & subcutaneous tissue inflammation	3 (0.3%)	4.42	Cutaneous inflammation (3): itch (2), flare (1)
Forgotten needles	0 (0.0%)	0.00	—
Unknown	1 (0.1%)	0.53	Incomplete form (1)
Total	82 (8.3%)	1.42	—

^aPain on “Seppi” (skin penetration by vertically tapping a handle of the needle) is excluded.

^bBleeding for less than 10 seconds is excluded.

^cNumber in parentheses represents the percentage of each adverse event for a total number of 984 first visits.

^dNumber of occurrences in the first visit percentage/Number of occurrences in return visit percentage.

^eSome of the details are multiple answers. Numbers in parentheses represent the number of the adverse events.

sec, seconds.