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Table 1 Frequency distribution of socio-economic and oral health-related behaviours in the main survey and clinical sub-study

From: Socio-demographic and behavioural correlates of oral hygiene status and oral health related quality of life, the Limpopo - Arusha school health project (LASH): A cross-sectional study

Variable

Main questionnaire survey (N = 2412)

Clinical sub-study (N = 1077)

Age

% (n)

% (n)

12-15 years

60.6 (1395)

69.8 (752)

16-21 years

39.4 (907)

30.2 (325)

Sex

  

Male

47.9 (1154)

46,6 (502)

Female

52.1 (1256)

53,4 (575)

Residence

  

Urban

48.2 (1163)

49.1 (529)

Rural

51.8 (1249)

50.9 (548)

Mother's education:

  

Low (primary school and below)

65.0 (1247)

68.7 (590)

High (secondary school and above)

35.0 (672)

31.3 (269)

Father's education:

  

Low (primary school and below)

54.7 (938)

57.7 (445)

High (secondary school and above)

45.3 (778)

42.3 (326)

Wealth index:

  

1st quartile (Most poor)

22.9 (517)

23.1 (233)

2nd quartile

29.2 (661)

33.7 (340)

3rd quartile

23.0 (521)

21.5 (217)

4th quartile (Least poor)

24.9 (562)

23.1 (219)

Family SES

  

High

76.5 (1827)

77.5 (825)

Moderate/Low

23.5 (560)

22.5 (239)

Tooth brushing

  

Not regularly

23.5 (562)

25.5 (273)

Regularly

76.5 (1833)

74.5 (796)

Parents afford dental care

  

Yes

48.1 (1143)

49.9 (530)

No

51.9 (1234)

50.1 (532)

Dental visit past 2 years

  

Yes

12.6 (299)

11.3 (120)

No

87.4 (2081)

88.7 (943)

Sugar-sweetened soft drinks intake

  

Never

46.8 (1116)

45.8 (485)

At least on weekly basis

53.2 (1267)

54.2 (575)

Tried smoking

  

Yes

5.8 (138)

5.6 (60

No

94.2 (2261)

94.4 (1009)

Having Oral impact on Daily performance (OIDP)

  

OIDP = 0 (no impact)

51.8 (1204)

49.3 (509)

OIDP > 0 (has impacts

48.2 (1122)

50.7 (524)

Oral hygiene status

  

Good oral hygiene (OHI-S ≤ 1)

 

55.2 (594)

Poor oral hygiene (OHI-S > 1)

 

44.8 (483)

  1. (The total numbers in the different categories do not add up to 2,412 in the main questionnaire survey and to 1,077 in the clinical sub study due to missing values)