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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].