Table 3. HAM-A total scores and SAS total anxiety index scores for the subgroups of the demographic characteristics before and after the completion of 10 sessions with biofeedback therapy.

		HAM-A BEFORE MEAN ± SD	HAM-A AFTER MEAN ± SD	P-value	SAS BEFORE MEAN ± SD	SAS AFTER MEAN ± SD	P-value
Gender	Male (30) Female (55)	24.67 ± 10.96 27.58 ± 11.45	12.87 ± 8.33 13.33 ± 8.03	<0.001 <0.001	62.60 ± 17.04 67.67 ± 16.49	37.73 ± 9.22 38.89 ± 9.12	<0.001 <0.001
Age	18-24 (9) 25-34 (21) 35-44 (24) 45-54 (18) 55-64 (12) >65 (1)	19.56 ± 5.05 27.33 ± 12.92 25.62 ± 12.06 27.55 ± 10.62 31.08 ± 10.34 23	7.89 ± 3.65 11.24 ± 7.72 14.12 ± 9.14 14.28 ± 6.66 16.33 ± 9.46 20	<0.001 <0.001 <0.001 <0.001 0.002	53.56 ± 7.99 67.09 ± 18.97 64.17 ± 16.86 68.11 ± 15.80 73.58 ± 15.97 60	31.67 ± 4.47 35.71 ± 9.09 40.00 ± 10.66 39.11 ± 6.63 43.83 ± 8.39 46	<0.001 <0.001 <0.001 <0.001 <0.001
Family Status	Single (39) Married (39) Divorced-Widower (7)	25.77 ± 11.92 26.82 ± 10.80 29.43 ± 11.63	12.31 ± 8.51 13.46 ± 7.31 16.28 ± 10.09	<0.001 <0.001 0.026	64.41 ± 17.08 66.64 ± 16.28 69.85 ± 19.23	37.67 ± 9.97 38.61 ± 7.85 42.28 ± 11.11	<0.001 <0.001 0.03
Education	Basic (2) Senior High (27) College (16) BSc (30) MSc-PhD (10)	26.50 ± 12.02 28.59 ± 11.54 26.81 ± 11.07 25.10 ± 11.55 25.00 ± 11.57	15.00 ± 11.31 13.63 ± 8.96 15.87 ± 7.90 11.33 ± 6.76 12.70 ± 9.37	0.028 <0.001 <0.001 <0.001 0.013	63.50 ± 21.92 69.00± 17.54 67.25 ± 16.97 63.33 ± 16.73 63.40 ± 15.36	47.00 ± 18.38 38.96 ± 9.05 40.19 ± 10.43 36.43 ± 7.24 38.90 ± 10.75	0.096 <0.001 <0.001 <0.001 <0.001
Employment	Public (11) Private (28) Free Lancer (18) Retired (8) Unemployed-Household (13) Student (7)	25.72 ± 10.90 27.85 ± 10.72 22.88 ± 11.11 33.62 ± 11.77 26.30 ± 12.86 24.43 ± 10.42	9.90 ± 5.26 14.64 ± 7.96 13.05 ± 9.04 16.87 ± 9.56 11.46 ± 8.66 11.57 ± 6.26	0.002 <0.001 <0.001 0.013 <0.001 0.006	64.36 ± 15.90 68.35 ± 16.27 60.27 ± 14.72 78.12 ± 16.27 64.84 ± 19.74 60.71 ± 16.08	34.18 ± 6.17 39.46 ± 9.21 37.77 ± 10.36 45.75 ± 8.64 37.23 ± 7.96 37.14 ± 9.22	<0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Previous Treatment	No (34) Yes (51)	22.06 ± 9.56 29.54 ± 11.46	11.62 ± 7.52 14.19 ± 8.36	<0.001 <0.001	59.17 ± 14.14 70.35 ± 17.00	36.23 ± 8.67 39.98 ± 9.18	<0.001 <0.001
Previous Therapy	None (33) Psychotherapy (11) Psychology-Alternative (29) Drugs (5) Psychotherapy + Drugs (7)	21.90 ± 9.67 28.72 ± 12.50 26.75 ± 11.08 36.60 ± 11.30 37.00 ± 5.59	11.66 ± 7.63 10.72 ± 8.21 14.41 ± 8.05 15.80 ± 9.17 17.00 ± 9.00	<0.001 <0.001 <0.001 0.047 0.004	58.97 ± 14.30 69.72 ± 16.72 66.82 ± 17.52 76.40 ± 16.37 81.00 ± 10.52	36.24 ± 8.80 36.54 ± 9.84 39.48 ± 9.12 42.80 ± 6.14 44.86 ± 8.61	<0.001 <0.001 <0.001 0.014 <0.001
Drugs	No (34) Yes (51)	26.70 ± 11.68 26.45 ± 11.15	12.03 ± 8.33 13.92 ± 7.91	<0.001 <0.001	66.53 ± 17.19 65.45 ± 16.62	37.32 ± 9.58 39.25 ± 8.81	<0.001 <0.001
Homeopathic	No (6) Yes (79)	26.16 ± 16.35 26.58 ± 10.97	10.50 ± 5.01 13.36 ± 8.26	0.066 <0.001	68.00 ± 20.96 65.72 ± 16.55	39.33 ± 6.91 38.41 ± 9.29	0.008 <0.001
TOTAL	(85)	26.55 ± 11.3	13.16 ± 8.09	<0.001	65.88 ± 16.76	38.48 ± 9.12	<0.001