Table 2.

Correlational analyses of serum Abs to Colv and clinical characteristics of asthma patients

Variable	All participants with asthma
	Statistic	P
Age
At time of study	−0.040	0.7205
At diagnosis	0.003	0.9794
At symptom onset	0.063	0.5821
Gender
Male	22.08 (19.173, 24.99)	0.530
Female	20.94 (19.159, 22.727)
Ethnicity
Caucasian	19.82 (17.591, 22.05)	0.055
African American	22.85 (20.672, 25.034)
Other
BMI	−0.220	0.1131
Asthma history, percent
Maternal
No	22.27 (18.532, 26.014)	0.609
Yes	20.87 (17.063, 24.689)
1st degree family member
No	22.69 (17.169, 28.213)	0.573
Yes	21.18 (18.196, 24.166)
Skin atopy
No	21.09 (15.567, 26.611)	0.834
Yes	20.47 (18.312, 22.634)
FEV1
Predicted, pre-BD	−0.024	0.8351
Predicted, post-BD	0.010	0.9557
Change, post-BD	−0.201	0.2323
Change ≥ 12, post-BD
No	21.74 (19.032, 24.456)	0.705
Yes	20.87 (16.549, 25.191)
FVC
Predicted, pre-BD	0.028	0.8170
Predicted, post-BD	−0.159	0.3622
Change, post-BD	−0.277	0.1021
Change ≥ 12, post-BD
No	22.78 (20.545, 25.011)	0.006
Yes	14.31 (7.1749, 21.451)
FeNO	0.072	0.6933
PC20	−0.426	0.0879
Inhaled corticosteroid dose	0.300	0.0322
Inflammatory cells
Eosinophils – circulating	0.347	0.0969
Eosinophils – sputum	0.239	0.2610
Neutrophils - sputum	0.265	0.1126

Pearson correlation coefficients are provided for associations between autoAb concentrations and continuous variables. Mean as well as upper and lower confidence limit intervals are provided for associations between autoAb concentrations and categorical variables. BD – bronchodilation. FEV1 – forced expiratory volume in one second. FVC – forced vital capacity. PC₂₀ – provocative concentration of a substance (methacholine) capable of inducing a 20% decrease in FEV₁. NA – analysis could not be performed