BioMed Research International TABLE 2:Demographic data of the intervention and control groups. Intervention group Control group (n=44) Group difference (1=38) n(%) n(%) P value Mean±SD Mean±SD Gender 0.627 Male 7(15.9) 8(2L.1) Female 37(64.1) 30(78.9) Age 0.074 65-70 9(20.5) 6(15.8) 71-75 8(18.2) 7(18.4) 76-80 12(27.3) 13(34.2) Over 80 15(34.1) 12(31.6) Marital status Single 3(6.8) 2(5.3) Married 18(40.9) 17(44.7) Divorced 1(2.3) 0(0) Widowed 22(50) 19(50) Education Level No formal education 16(36.4) 19(50) Primary level 23(52.3) 13(34.2) Secondarylevel 5(1.4) 5(13.2) Tertiary level 0(0) 1(2.6) Personal health history(multiple answers can be chosen) No chronic illnesses 6(13.6) 3(7.9) 0.536 Hypertension 31(70.5) 26(68.4) 0.130 Diabetes mellitus 10(22.7) 13(34.2) 0.825 Heartdiseases 4(9.1) 6(15.8) 0.593 Stroke 5(1.4) 1(2.6) 0.693 Gout 6(13.6) 12(31.6) 0.392 Respiratory diseases 4(9.1) 6(15.8) 0.435 Arthritis 8(18.2) 13(34.2) 0.145 Cataract 13(29.5) 11(28.9) 0.715 Others 11(25) 11(28.9) 0.932 Living Status 0.485 Alone 16(36.4) 23(60.5) With spouse 9(20.5) 3(7.9) With spouse and children 10(22.7) 6(15.8) With children 8(18.2) 5(13.2) With relatives or friends 1(2.3) 1(2.6) Financial status 0.881 Very poor 0(0) 0(0) Poor 4(9.1) 5(13.2) Average 31(70.5) 21(55.3) Good 9(20.5) 12(31.6) Very good 0(0) 0(0) Previous occupation 0.729 Worker 19(42.2) 20(52.6) Clerk 1(2.3) 1(2.6)4 BioMed Research International Table 2: Demographic data of the intervention and control groups. Intervention group (𝑛 = 44) Control group (𝑛 = 38) Group difference 𝑛 (%) Mean ± SD 𝑛 (%) Mean ± SD 𝑃 value# Gender 0.627 Male 7 (15.9) 8 (21.1) Female 37 (64.1) 30 (78.9) Age 0.074 65–70 9 (20.5) 6 (15.8) 71–75 8 (18.2) 7 (18.4) 76–80 12 (27.3) 13 (34.2) Over 80 15 (34.1) 12 (31.6) Marital status 0.298 Single 3 (6.8) 2 (5.3) Married 18 (40.9) 17 (44.7) Divorced 1 (2.3) 0 (0) Widowed 22 (50) 19 (50) Education Level 0.559 No formal education 16 (36.4) 19 (50) Primary level 23 (52.3) 13 (34.2) Secondary level 5 (11.4) 5 (13.2) Tertiary level 0 (0) 1 (2.6) Personal health history (multiple answers can be chosen) No chronic illnesses 6 (13.6) 3 (7.9) 0.536 Hypertension 31 (70.5) 26 (68.4) 0.130 Diabetes mellitus 10 (22.7) 13 (34.2) 0.825 Heart diseases 4 (9.1) 6 (15.8) 0.593 Stroke 5 (11.4) 1 (2.6) 0.693 Gout 6 (13.6) 12 (31.6) 0.392 Respiratory diseases 4 (9.1) 6 (15.8) 0.435 Arthritis 8 (18.2) 13 (34.2) 0.145 Cataract 13 (29.5) 11 (28.9) 0.715 Others 11 (25) 11 (28.9) 0.932 Living Status 0.485 Alone 16 (36.4) 23 (60.5) With spouse 9 (20.5) 3 (7.9) With spouse and children 10 (22.7) 6 (15.8) With children 8 (18.2) 5 (13.2) With relatives or friends 1 (2.3) 1 (2.6) Financial status 0.881 Very poor 0 (0) 0 (0) Poor 4 (9.1) 5 (13.2) Average 31 (70.5) 21 (55.3) Good 9 (20.5) 12 (31.6) Very good 0 (0) 0 (0) Previous occupation 0.729 Worker 19 (42.2) 20 (52.6) Clerk 1 (2.3) 1 (2.6)