Skip to main content

Table 1 Comparison of analytical subsample with complete cohort

From: BMI trajectory in childhood is associated with asthma incidence at young adulthood mediated by DNA methylation

Variables   Males Females
Categorical variables   Subsample (n = 122);
n (%)
Complete cohort (n = 552);
n (%)
P-value Subsample (n = 102);
n (%)
Complete cohort (n = 584);
n (%)
P-value
Asthma incidence Yes 12 (9.84%) 31 (7.43%) 0.39 8 (7.84%) 45 (9.59%) 0.58
  No 110 (90.16%) 386 (92.57%)   94 (92.16%) 424 (90.41%)  
Socio-economic status Low 15 (12.40%) 75 (16.09%) 0.38 18 (17.82%) 78 (15.06%) 0.77
  Mid 97 (80.17%) 345 (74.03%)   75 (74.26%) 400 (77.22%)  
  High 9 (7.44%) 46 (9.87%)   8 (7.92%) 40 (7.72%)  
Active smoking status (18 years) Past 28 (23.14%) 76 (17.55%) 0.37 21 (20.79%) 100 (20.37%) 0.55
  Current 28 (23.14%) 112 (25.87%)   22 (21.78%) 132 (26.88%)  
  Never 65 (53.72%) 245 (56.58%)   58 (57.43%) 259 (52.75%)  
Second-hand smoking (1, 2, 4 years) Yes 62 (52.10%) 333 (62.95%) 0.03 58 (56.86%) 337 (59.86%) 0.57
  No 57 (47.90%) 196 (37.05%)   44 (43.14%) 226 (40.14%)  
Continuous variables Mean ± SD Mean ± SD   Mean ± SD Mean ± SD  
Age of puberty 14.14 ± 1.10 14.26 ± 1.17 0.25 12.6 ± 1.35 12.7 ± 1.41 0.54