Table 1: Distribution of patients according to the characteristics and survey periods (unit = %).

- 2012 (n = 500) 2013 (n = 500) 2014 (n = 500) 2015 (n = 500) 2016 (n = 500)
Age (years) n (%) n (%) n (%) n (%) n (%)
20-34 70 (14) 45 (9) 40 (8) 55 (11) 50 (10)
35-49 90 (18) 100 (20) 105 (21) 90 (18) 95 (19)
50-64 150 (30) 160 (32) 145 (29) 155 (31) 150 (30)
> 65 190 (38) 195 (39) 210 (42) 200 (40) 205 (41)
Gender
Female 175 (35) 205 (41) 195 (39) 210 (42) 185 (37)
Male 325 (65) 295 (59) 305 (61) 290 (58) 315 (63)
Marital status
Never married 50 (10) 40 (8) 30 (6) 20 (4) 25 (5)
Currently married 325 (65) 340 (68) 370 (74) 375 (75) 360 (72)
Widowed or separated 125 (25) 120 (24) 100 (20) 105 (21) 115 (23)
Education
No 0 0 0 0 0
Secondary 195 (39) 205 (41) 175 (35) 180 (36) 170 (34)
High 305 (61) 295 (59) 325 (65) 320 (64) 330 (66)