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Table 4 Sociodemographic characteristics and symptoms of enrollees ≥ 5 years of age reported at enrollment for developmental and validation samples

From: Classification and Regression Tree (CART) analysis to predict influenza in primary care patients

  Developmental sample
Total (N = 2087)
Validation sample
Total (N = 2086)
Characteristics N (%) N (%)
Vaccinated by self-report 173 (8.5) 181 (8.9)
Smoker 215 (15.2) 221 (16)
Smoker in the household 223 (10.7) 258 (12.4)
Asthma diagnosis 543 (26.4) 555 (27.1)
Any high risk condition 569 (84.4) 578 (85.5)
Symptoms reported at enrollment
 Fever 1461 (70) 1449 (69.5)
 Cough 1912 (91.6) 1906 (91.4)
 Fatigue 1795 (86) 1815 (87)
 Wheezing 773 (37) 777 (37.2)
 Sore throat 1543 (73.9) 1562 (74.9)
 Nasal Congestion 1690 (81) 1661 (79.6)
 Shortness of breath 911 (43.7) 988 (47.4)
Age, years, Mean (SD) 34.8 (22.3) 33.5 (22)