Table 2

Prevalence of active smoking at ages 22, 26 and 32 years by concurrent respiratory symptoms

Active adult respiratory symptomsConcurrent adult smoking
22 years26 years32 years
N%+P valuesN%+P valuesN%+P values
Recurrent cough
 No59322.955721.049412.2
 Yes11938.7<0.0019532.60.0129430.9<0.001
Wheeze
 No43918.539718.439110.7
 Yes27837.1<0.00125629.30.00120524.9<0.001
MD asthma
 No58024.751822.048314.9
 Yes13429.90.213024.60.511318.60.3
  • Proportions compared by Χ2.

  • MD, physician diagnosed.