Table 1. Headache Characteristics Before and After Peripheral Scalp Neurostimulation^a.

No	Sex	Age, y	History of HA	HA Frequency		HA Duration		TPI		TPI Reduction (%)	Nerve(s) Stimulated	Self-Rated Outcome	F/U Duration	Comments (See Tab 2)
				Before	After	Before	After	Before	After
1 a	F	47	14	daily	rarely	constant	2 h	574	140	75.6	L. occi /supra/auri	good	9
2 a	M	48	5	daily	1 - 2/w	constant	2 - 3 h	390	88	77.4	Bil. occi/supra/auri	good	9	1
3 a	M	53	15	daily	1 - 2/w	constant	2 - 3 h	854	124	85.5	Bil. occi	excellent	2	2
4	F	54	15	daily	none	constant	none	364	0	100	Bil. occi/supra	excellent	5	3
5	F	46	6	daily	rarely	constant	2 - 3 h	630	28	95	Bil. occi /supra	good	7	4
6	F	42	5	daily	2/w	constant	2 - 3h	420	48	88.6	L. occi/supra	good	7
7	F	62	15	daily	1 - 2/w	constant	3 - 4 h	840	36	95.7	Bil. occi	excellent	7
8	F	50	20	5/w	none	constant	none	504	0	100	Bil. occi	excellent	7
9	M	59	15	daily	daily	8 - 9 hours	2 - 3 h	364	140	61.5	L. occi/supra	fair	6
10	M	66	20	daily	none	0.5 to 1 h	none	336	0	100	L. occi/supra	excellent	6
11	F	38	5	daily	rarely	constant	1 - 2 h	350	32	90.9	R. occi/supra	excellent	6
12	F	50	20	daily	rarely	constant	1 - 2 h	364	32	91.2	R. occi/supra	excellent	6
13	F	60	20	daily	none	constant	none	434	0	100	L. occi	excellent	6
14	F	41	3	daily	1/w	constant	1-2 h	616	10	98.4	Bil. cci/supra/auri	very good	6
15	F	51	5	daily	3/w	constant	1 - 2 h	504	16	96.8	Bil. occi	excellent	6
16	M	31	3	daily	none	8 - 12 h	none	390	0	100	L. occi/supra	excellent	5
17	F	33	2	daily	rarely	constant	0.5 - 1 h	476	4	99.2	R. occi/supra	excellent	4
18	F	23	3	daily	3 - 5/w	constant	2 - 3 h	532	124	76.7	Bil. supra	good	4
19	F	48	5	daily	2 - 3/w	constant	2 - 3 h	530	120	77.3	R. occi/auri	excellent	4
20	F	37	3.5	daily	3/w	constant	1 - 2 h	420	96	77.1	R. occi/supra	good	2.5
21	F	24	5	daily	daily	constant	12 h	840	336	60	Bil. occi/supra	good	1.5
22	F	22	13	daily	daily	constant	14 h	868	280	68	Bil. occi/supra	good	1.5
23	F	56	25	daily	rarely	constant	1 - 2 h	360	60	83.3	Bil. occi	excellent	0.3	5
24	F	58	5	daily	rarely	constant	2 - 3 h	435	80	81.6	Bil. occi	good	0.3	6

Abbreviations: Freq, frequency; HA, headache; Dur, duration; Bil, bilateral; L, left; R, right; h, hour; F/U, follow-up; occi, occipital nerve; supra, supraorbital nerve; auri, auriculotemporal nerve.

^aPatients number 1 - 3 were the early cases with silastic anchors. The other patients (numbers 4 - 24) were treated using the revised surgical technique.