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Table 1 Sample characteristics of children at baseline

From: Effect of a sport-for-health intervention (SmokeFree Sports) on smoking-related intentions and cognitions among 9-10 year old primary school children: a controlled trial

  Comparison Intervention
  All (n = 241) M ± SD or % Boys (n = 114) M ± SD or % Girls (n = 127) M ± SD or % All (n = 720) M ± SD or % Boys (n = 363) M ± SD or % Girls (n = 357) M ± SD or %
Demographics       
 Age (years) 9.6 ± 0.3 9.6 ± 0.3 9.6 ± 0.3 9.6 ± 0.3 9.6 ± 0.3 9.6 ± 0.3
 Ethnicity (White British) 98.3 99.1 97.6 82.1 82.6 81.5
 Deprivation level (IMD) 50.9 ± 17.9 49.8 ± 17.7 51.9 ± 18.2 55.7 ± 16.4 55.5 ± 16.5 55.8 ± 16.3
Enjoyment of physical activity       
 PACES enjoyment scale (range 1–5) 4.3 ± 0.7 4.3 ± 0.7 4.3 ± 0.7 4.3 ± 0.7 4.2 ± 0.8 4.4 ± 0.6
Smoking intentions       
 Total non-smoking intentions (range 4–12) 11.7 ± 1.0 11.6 ± 1.1 11.7 ± 0.9 11.8 ± 0.8 11.7 ± 1.0 11.9 ± 0.5
Self-efficacy       
 Total refusal self-efficacy (range 3–15) 13.5 ± 3.2 13.5 ± 3.1 13.5 ± 3.3 13.7 ± 3.0 13.4 ± 3.3 14.0 ± 2.7
Attitudes towards smoking       
 Smoking is bad for health (‘definitely yes’) 88.8 87.7 89.8 90.1 86.2 94.1
 Safe to smoke year or two (‘definitely not’) 59.8 60.5 59.1 64.4 63.6 65.3
 Difficult to quit once started (‘definitely yes’) 43.2 45.6 40.9 52.8 51.2 54.3
 Others smoke harmful to you (‘definitely yes’) 59.3 60.5 58.3 66.1 63.1 69.2
 Affects sports performance (‘definitely yes’) 51.0 53.5 48.8 58.3 59.2 57.4
 Makes you gain/lose weight (‘no difference’) 42.3 37.7 46.5 42.6 45.2 40.1
Social influences       
 Mother smoking 40.7 39.5 41.7 34.9 32.2 37.5
 Father smoking 43.6 47.4 40.2 38.2 38.0 38.4
 Sibling smoking 10.8 10.5 11.0 9.2 8.0 10.4
 Friend smokinga 18.7 25.4 12.6 17.1 22.9 11.2
  1. Notes: IMD, Indices of multiple deprivation score; aat least one friend smokes or tried