Table 5.

Two-way repeated measures ANOVA for between group and time interactions of BPI scores in patients with HZ and PHN.

Disease	Group	Number	baseline	2 weeks	3 months	6 months	12 months		F	P -value
HZ	Trunk	79	41.72 ± 9.06	11.19 ± 5.39	12.04 ± 10.33	6.34 ± 7.51	3.27 ± 5.29	Group	0.612	0.609
	Neck	26	40.42 ± 11.94	10.73 ± 6.31	7.65 ± 7.13	7.27 ± 7.18	1.92 ± 3.78	Time	335.868	<0.001
	Facial	16	38.88 ± 11.02	12.75 ± 9.14	11.62 ± 5.86	9.38 ± 9.16	3.12 ± 4.40	Group*Time	60.870	0.899
	Hip	10	40.60 ± 7.55	10.30 ± 6.38	11.50 ± 8.64	7.20 ± 7.44	2.50 ± 3.98
PHN	Trunk	147	33.63 ± 14.53	15.78 ± 11.33	15.71 ± 10.91	12.91 ± 12.08	11.97 ± 12.53	Group	1.805	0.147
	Neck	37	36.05 ± 16.87	16.38 ± 11.31	15.32 ± 12.34	11.46 ± 10.65	9.30 ± 8.86	Time	77.983	<0.001
	Facial	27	23.52 ± 14.43	17.70 ± 14.31	11.15 ± 10.37	9.19 ± 10.31	7.11 ± 8.16	Group*Time	2.635	0.051
	Hip	19	32.42 ± 17.50	16.32 ± 7.80	16.05 ± 12.83	13.16 ± 13.45	12.37 ± 11.76
	>12 months	66	35.64 ± 14.25	17.23 ± 11.32	17.50 ± 12.09	14.38 ± 12.54	12.11 ± 12.30	Group	2.163	0.117
	7-12 months	71	31.30 ± 16.99	14.27 ± 12.00	14.48 ± 11.06	11.77 ± 12.55	11.00 ± 12.24	Time	163.967	<0.001
	4-6 months	93	31.77 ± 14.97	16.81 ± 10.97	13.97 ± 10.70	11.13 ± 10.47	10.22 ± 10.53	Group*Time	0.039	0.962

HZ, herpes zoster; PHN, postherpetic neuralgia; BPI, brief pain inventory; ANOVA, analysis of variance.