Chromogenic print, reproduced from a contact sheet
The graphs below detail the exact constituents detected, as well as average reductions for each blu product compared to the levels recorded in cigarette smoke
Selon les auteurs, il pourrait y avoir des effets sur le risque d'infections, de cancers ou de maladies auto-immunes
Control variables included demographic and socioeconomic characteristics: age, gender (0=female, 1=male), urban/rural residence (0=rural, 1=urban), marital status (0=single, 1=married or cohabiting), children (0=none, 1=at least one child), education level (1=primary school, 2=middle school, 3=college diploma, 4=Bachelors degree, 5=postgraduate), and household income (log-transformed for regression analysis)