Respiratory outcomes of ultrafine particulate matter (UFPM) as a surrogate measure of near-roadway exposures among bicyclists

Table 1 Descriptive characteristics of the participants (n = 32)

Characteristics	Number (%), SD^a
Sex- n (%)
Male	24 (75%)
Female	8 (25%)
Race/ethnicity - n (%)
White	29 (91%)
Asian	2 (6%)
Not specified	1 (3%)
Age- Mean (range)	45.1 (23–68), SD^a: 12.5
Height (cm) -Mean (range)	175.0 (155.0–196.0), SD: 9.0
Weight (kg) -Mean (range)	75.3 (51.3–108.9), SD: 11.7
BMI^b- Mean (range)	24.5 (20.1–29.8), SD: 2.4
Distance for cycling (km)- Mean (range)	22.2 (16.0–32.0), SD: 3.1
Former smokers - n (%)	4.0 (13%)
Ever diagnosed as asthma- n (%)	4.0 (13%)
Ever diagnosed for allergies- n (%)	17.0 (53%)

^a SD Standard deviation
^b BMI Body weight (kilograms) divided by the square of the body height (meters)

ISSN: 1476-069X