Canadian Respiratory Journal

Research Article

Clinical Differences between Early- and Late-Onset Asthma: A Population-Based Cross-Sectional Study

Table 3

Relationship between blood basophils (%) and clinical data.


EOA (n = 90)		LOA (n = 111)
Blood basophils%	r	value	r	value

Gender	0.043	0.823	0.135	0.476
BMI	0.132	0.488	0.211	0.262
Smoking history	0.222	0.238	−0.172	0.363
Family history	−0.019	0.921	0.141	0.458
Rhinitis	−0.119	0.532	−0.116	0.541
White cell counts (^∗10⁹/L)	−0.004	0.983	−0.194	0.313
Blood eosinophils (%)	0.549	0.002	0.317	0.088
Blood eosinophils (^∗10⁹/L)	0.496	0.000	0.227	0.228
Blood basophils (^∗10⁹/L)	0.937	0.000	0.800	0.000
Blood neutrophils (%)	0.036	0.849	−0.021	0.913
Blood neutrophils (^∗10⁹/L)	−0.143	0.451	−0.281	0.140
Spirometry
FEV₁/FVC (%)	−0.199	0.362	−0.046	0.818
FEV₁% pred	−0.062	0.779	0.024	0.904
FEV₁ (L)	−0.056	0.8	0.171	0.394
FVC% pred	−0.098	0.665	0.179	0.373
FeNO (ppb)	−0.031	0.877	0.179	0.414
Allergen
Mites	−0.084	0.659	−0.064	0.737
Cat fur	−0.14	0.461	0.173	0.361
Dog fur	−0.079	0.679	0.213	0.258
Cockroach	0.069	0.716	−0.027	0.889
Wheat flour	−0.228	0.226	−0.176	0.351
Egg	−0.084	0.061	0.173	0.361
Molds	—	—	−0.077	0.688
Aspergillus fumigatus	—	—	−0.077	0.688
Willow	—	—	0.173	0.361
Weeds	0.239	0.203	0.123	0.517
sIgE (kIU/L)	0.012	0.951	0.026	0.917

BMI, body mass index; EOA, early-onset asthma; FeNO, fractional exhaled nitric oxide; FEV₁, forced expiratory volume in 1 second; FVC, forced vital capacity; LOA, late-onset asthma; pred, predicted; sIgE, specific immunoglobulin E.