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Table 2 Selected Characteristics of Participants included in the present analysis, the Montreal Asthma Panel Study, 2009–2010

From: Using Global Positioning Systems (GPS) and temperature data to generate time-activity classifications for estimating personal exposure in air monitoring studies: an automated method

Characteristics 54 participants) Values Frequency (%)
Age Mean (standard deviation) 9.6 (1.3)
  Minimum-maximum 8 – 13
Race White 38 (70%)
  Black 9 ( 17%)
  Other 7 (13%)
Gender Boys 41 (76%)
  Girls 13 (24%)
Usual commute method to school On foot 24 (44%)
  Car, truck 17 (32%)
  Bus 13 (24%)
Type of house or dwelling Detached house 17 (32%)
  Row house 8 (15%)
  Low rise apartment 10 (19%)
  High rise apartment 8 (15%)
  Du/Tri/Fourplex or Semi-detached 11 (20%)
Year house built <1951 4 (7%)
  1951-1970 17 (31%)
  1971-2000 14 (26%)
  >2001 6 (11%)
  Did not know/no response 13 (24%)