Skip to main content

Table 2 Prevalence of exposure to second hand smoke at home and in public places, Hanwella, Colombo, Sri Lanka

From: Prevalence and correlates of exposure to second hand smoke (SHS) among 14 to 15 year old schoolchildren in a medical officer of health area in Sri Lanka

Factors

Home

Public Places

Exposed n (%)

Not exposed n (%)

Significance testing

Exposed n (%)

Not exposed n (%)

Significance testing

Total

54 (17.6)

252 (82.4)

P1 < 0.0001

80 (25.7)

231 (74.3)

P1 < 0.0001

Sex

 Female

31 (20.0)

124 (80.0)

χ2 = 1.19, df = 1, p = 0.27

45 (28.3)

114 (71.7)

χ2 = 1.13, df = 1, p = 0.29

 Male

23 (15.2)

128 (84.8)

35 (23.0)

117 (77.0)

Age

 14 years

30 (17.4)

143 (82.7)

χ2 = 0.02, df = 1, p = 0.87

40 (23.0)

134 (77.0)

χ2 = 1.07,df = 1, p = 0.30

 15 years

24 (18.0)

109 (82.0)

38 (28.1)

97 (71.9)

Ethnicity

 Sinhalese

42 (18.8)

182 (81.2)

χ2 = 1.24, df = 1, p = 0.27

52 (22.9)

175 (77.1)

χ2 = 5.06, df = 1, p = 0.02

 Non- Sinhalese

10 (13.2)

66 (86.6)

28 (35.9)

50 (64.1)

Presence of smokers in household

 Present

24 (50.0)

24 (50.0)

χ2 = 41.0, df = 1, p < 0.001

20 (41.7)

28 (58.3)

χ2 = 8.6, df = 1, p = 0.003

 Not present

30 (11.6)

228 (88.4)

56 (21.7)

202 (78.3)

Employment status of father

 Employed

50 (17.9)

230 (82.1)

χ2 = 0.3, df = 1, p = 0.58

73 (25.6)

212 (74.4)

χ2 = 0.25, df = 1, p = 0.62

 Unemployed

14 (87.4)

2 (12.5)

5 (31.2)

11 (68.8)

Employment status of mother

 Employed

33 (14.9)

188 (85.1)

χ2 = 6.7, df = 1, p = 0.01

53 (23.5)

173 (76.5)

χ2 = 3.9, df = 1, p = 0.05

 Unemployed

21 (28.4)

53 (71.6)

26 (35.1)

48 (64.9)

  1. χ2 Chi Square value, df degree of freedom, p significance, p1 based on difference between two proportions
  2. Exposure to SHS at home - sex 5, age 5, ethnicity 11, presence of smokers 5, father’s employment status 15, mother’s employment status 16
  3. Exposure to SHS in enclosed public places - age 2, ethnicity 6, presence of smokers 5, father’s employment status 10, mother’s employment status 11