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Table 1 Characteristics of students from the first year of compulsory secondary education in Catalonia according to tobacco consumption, opinions, and social and family setting

From: Factors associated with commencing smoking in 12-year-old students in Catalonia (Spain): a cross-sectional population-based study

  TOBACCO HABIT
  NON-SMOKER SMOKER TOTAL P_value*
  N % N % N %  
Date of Birth
1992 4 0.14% 1 0.64% 5 0.20% 0.0000
1993 44 2.11% 20 12.74% 64 2.90%  
1994 312 14.94% 58 36.94% 370 16.50%  
1995 17280 82.76% 78 49.68% 1806 80.40%  
Sex
Male 1078 51.63% 97 61.78% 1175 52.34% 0.0161
Female 1010 48.37% 60 38.22% 1070 47.66%  
Immigration
No 1475 82.59% 74 70.48% 1549 81.91% 0.0037
Yes 311 17.41% 31 29.52% 342 18.09%  
Socio-economic status
  854 54.26% 60 73.17% 914 55.19% 0.0009
Low 450 28.59% 17 20.73% 467 28.20%  
Medium 450 28.59% 17 20.73% 467 28.20%  
High 270 17.15% 5 6.10% 275 16.61%  
Smoker father
No 614 29.82% 33 21.57% 647 29.25%  
Former smoker 610 29.63% 32 20.93% 642 29.02% 0.0003
Yes 835 40.55% 88 57.52% 923 41.73%  
Smoker mother
No 957 46.08% 55 35.71% 1012 45.36% 0.0003
Former smoker 431 20.75% 23 14.94% 454 20.35%  
Yes 689 33.17% 76 49.35% 765 34.29%  
Smoking in siblings
No 1656 84.19% 89 59.73% 1745 82.47% 0.0000
Yes 311 15.81% 60 40.27% 371 17.53%  
Smoking in friends
None 585 28.10% 6 3.85% 591 26.41% 0.0000
Some 951 45.68% 92 58.97% 1043 46.60%  
Almost all 88 4.23% 44 28.21% 132 5.90%  
All 11 0.53% 11 7.05% 22 0.98%  
I don't know 447 21.47% 3 1.92% 450 20.11%  
Smoking among teachers
None 37 1.78% 3 1.94% 40 1.79% 0.0072
Some 876 42.12% 63 40.65% 939 42.01%  
Almost all 201 9.66% 18 11.61% 219 9.80%  
All 19 0.91% 8 5.16% 27 1.21%  
I don't know 947 45.53% 63 40.65% 1010 45.19%  
Detrimental to health
Agree 2023 97.55% 143 92.26% 2166 97.18% 0.0000
Disagree 51 2.45% 12 7.75% 63 2.82%  
Tobacco creates addiction
Agree 1971 95.31% 130 83.88% 2101 97.51% 0.0000
Disagree 97 4.69% 25 16.12% 122 5.49%  
Tobacco is a drug
Agree 1837 88.88% 99 64.28% 1936 87.17%  
Disagree 230 11.12% 55 35.72% 285 12.83%  
Smoking is fashionable
Agree 1235 59.72% 96 62.33% 1331 59.90% 0.4218
Disagree 833 40.28% 58 37.67% 891 40.10%  
Co-oximetry
< 6p.p.m 1863 95.30% 126 84.60% 1989 94.50% 0.0000
[6-10 p.p.m] 69 3.50% 13 8.70% 82 3.90%  
> 10 p.p.m 23 1.20% 10 6.70% 33 1.60%  
  1. *Chi_square test