Skip to main content

Table 1 Characteristics of the study participants in baseline and those who participated and lost in follow-up

From: Assessment of periodontal knowledge following a mass media oral health promotion campaign: a population-based study

  Baseline Follow-up Lost to follow  
  N = 791 N = 543 N = 248  
  No. (%) No. (%) No. (%) P*
Gender        0.37
Male 398 (50.3) 279 (51.4) 119 (48)  
Female 393 (49.7) 264 (48.6) 129 (52)  
Total 791 (100) 543 (100) 248 (100)  
Age group        0.38
18-24 216 (27.3) 143 (26.3) 73 (29.4)  
25-34 257 (32.5) 178 (32.8) 79 (31.9)  
35-44 192 (24.3) 128 (23.6) 64 (25.8)  
> 45 126 (15.9) 94 (17.3) 32 (12.9)  
Total 791 (100) 543 (100) 248 (100)  
Education        0.62
Illiterate/Elementary1 126 (16.0) 91 (16.8) 35 (14.1)  
High school 336 (42.6) 229 (42.3) 107 (43.1)  
University 327 (41.4) 221 (40.9) 106 (42.8)  
Total 789 (100) 541 (100) 248 (100)  
Marital status        0.16
Married 276 (35.2) 183 (34.1) 93 (38)  
Single 507 (64.8) 355 (65.9) 152 (62)  
Total 783 (100) 538 (100) 245 (100)  
Employment        0.86
Employed 384 (48.9) 270 (50.3) 114 (46)  
Unemployed 62 (7.9) 41 (7.6) 21 (8.5)  
Student 99 (12.6) 64 (11.9) 35 (14.1)  
Housewife 224 (28.5) 152 (28.3) 72 (29)  
Other 16 (2.1) 10 (1.9) 6 (2.4)  
Total 785 (100) 537 (100) 248 (100)  
Economic status 2       0.11
Low 227 (33.4) 164 (34.7) 63 (30.2)  
Moderate 223 (32.8) 143 (30.3) 80 (38.5)  
High 230 (33.8) 165 (35.0) 65 (31.3)  
Total 680 (100) 472 (100) 208 (100)  
  1. *Chi-square test (p < 0.05).
  2. 1Illiterate/Elementary: less than nine years of education.
  3. 2derived from average living area in square meter per person (m2/p) [22].