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Table 1 Descriptive characteristics of the study population, n = 173

From: Cockroach exposure and perceived stress interact to predict clinical outcomes in childhood asthma

Variable No No. (%) or Mean ± SD
Child’s Race/Ethnicity 173  
Non-Hispanic Black   121 (69.9)
Hispanic   45 (26.0)
Other   7 (4.0)
Household income 166  
 ≤ $25,000   154 (92.8)
 > $25,000   12 (7.2)
Child’s age (years) 173 9.7 ± 3.1
Male Sex 173 104 (60.5)
Marital Status 142 108 (75.5)
Singlea   
Home ownership 155 136 (87.7)
Renter   
Body Mass Index (percentile) 139  
Underweight (BMI < 5th)   15 (10.8)
Normal weight (BMI ≥ 5th and < 85th)   67 (48.2)
Overweight (BMI ≥ 85th and < 95th)   13 (9.3)
Obese (BMI ≥ 95th)   44 (31.6)
Smoker in Home 142 46 (32.4)
Cockroach Exposure 136 45 (33.8)
Perceived Stress Score (PSS-4) 173  
Normal (PSS-4: ≤ 7)   104 (60.1)
High (PSS-4: 8–10)   65 (37.6)
Very high (PSS-4: ≥ 11)   4 (2.3)
Sensitized (sIgE ≥ 0.35 Ku/L) 151  
Cat   21 (14.2)
House Dust Mite   84 (56.8)
Dog   38 (25.7)
Mouse   16 (11.1)
Cockroach   40 (26.5)
 ≥ 1 allergen   91 (60.0)
 ≥ 2 allergens   84 (55.6)
Health Care Utilization, previous 4 months
Unscheduled Clinic/ED Visit 173 86 (49.7)
Hospitalization 172 30 (17.4)
Pulmonary Inflammation, FeNOb 122  
 > 20 ppb   32 (26.2)
 ≤ 20 ppb   90 (73.8)
Pulmonary Function 137  
FEV1% Predicted < 80%   65 (47.4)
FEV1% Predicted, Mean   85.39 ± 27.33
  1. Abbreviations: ED, emergency department; FeNO, fraction of exhaled nitric oxide; FEV, forced expiratory volume; SD, Standard deviation
  2. a Raising child without a partner
  3. b Fractional Exhaled Nitric Oxide