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Table 1 Sample characteristics

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 Female n (%) Male n (%) Total n (%) Significance testing
Age
 14 years 90 (56.6) 83 (56.8) 173 (56.6) χ2 = 0.13, df = 1, p = 0.72
 15 years 69 (43.4) 69 (43.2) 138 (44.4)
Ethnicity
 Sinhalese 119 (77.8) 108 (71.1) 227 (74.4) χ2 = 1.8, df = 1, p = 0.18
 Non- Sinhalese 34 (22.2) 44 (28.9) 78 (25.6)
Presence of smokers in household
 Present 35 (22.6) 13(8.6) 48 (15.7) χ2 = 11.29, df = 1, p = 0.001
 Not present 120 (77.4) 138 (91.4) 254 (84.7)
Employment status of father
 Employed 141 (91.6) 144 (98.0) 285 (94.7) χ2 = 6.12, df = 1, p = 0.01
 Unemployed 13 (8.4) 3 (2.0) 16 (5.3)
Employment status of the mother
 Employed 112 (72.3) 114 (78.6) 226 (75.5) χ2 = 1.63, df = 1, p = 0.20
 Unemployed 43 (27.7) 31 (21.4) 74 (24.7)
  1. Data missing: ethnicity 6, presence of smokers 5, father’s employment status 10, mother’s employment status 11
  2. χ2 Chi-square value, df degree of freedom, p Chi-square test