Table 1. Demographic characteristics of study participants
TotalMenWomen
Sex, n %19988 (44.2)111 (55.8)
Ethnicity, n (%)
 African descent192 (96.5)86 (97.7)106 (95.5)
 Mixed6 (3.0)1 (1.1)5 (4.5)
 East Indian 1 (0.5)1 (1.1)0 (0)
Mean age, years (SD)37.2 (12.8)37.9 (13.1)36.7 (12.6)
Asthma diagnosis, n (%)44 (22.1)14 (15.9)30 (27.0)
Mean height, cm (SD), = 197168.5 (9.8)174.7 (7.2)163.6 (8.8)
BMI, kg/m2 (SD), = 19528.2 (7.4)26.1 (6.3)29.8 (7.7)
Current tobacco user, n (%)29 (23.4)20 (29.8)9 (15.8)
Marijuana use in last month, n (%)44 (22.2)29 (33.3)15 (13.5)
  • BMI = body mass index. SD = standard deviation.