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Table 2 Participant characteristics

From: Validation of a short form Wisconsin Upper Respiratory Symptom Survey (WURSS-21)

Participants    Number (per cent)
   Ethnicity*  
Enrollment   White 198 (86.0)
Number of calls 2,169 Black 16 (7.0)
Enrolled in other study 534 Hispanic 1 (0.4)
Enrolled in this study 239 Asian 4 (1.7)
Completing protocol 230 Native American 2 (0.8)
   Other/No response 10 (4.4)
Age and Sex   Income  
Age range 14 to 83 <15 K/yr 91 (39.6)
Mean (SD) 34.1 (13.6) 15 to <25 K/yr 24 (10.4)
  Number, per cent 25 to <50 K/yr 35 (15.2)
Women 153 (66.5) 50 to <75 K/yr 39 (17.0)
Men 77 (33.5) 75 to <100 K/yr 26 (11.3)
   >100 K/yr 11 (4.8)
Education (highest achieved)   No response 4 (1.7)
Some HS 9 (3.9%) Tobacco use  
HS degree/GED 54 (23.5%) Current > 5 cigarettes/day 18 (7.8)
Some college 61 (26.5%) Current ≤ 5 cigarettes/day 19 (8.3)
College degree 104 (45.2%) Past 50 (21.7)
   Non-smoker 141 (61.3)
   No response 2 (0.9)
  1. *One person self-identified as both white and Native America