… All statistical tests were rendered two tailed, and P < .05 was considered significant. Potential
for publication bias was assessed using the Egger test and funnel plots. Another method of …

… 5.1%; P < 0.001) and increased with age (P trend < 0.001). Fewer education years were
associated with a higher prevalence (P trend < 0.001); those with a BMI of less than 18.5 kg/m 2 …

Background Although exposure to cigarette smoking and air pollution is common, the current
prevalence of chronic obstructive pulmonary disease (COPD) is unknown in the Chinese …

X-ray detection, which plays an important role in medical and industrial fields, usually relies
on inorganic scintillators to convert X-rays to visible photons; although several high-quantum-…

… <0·0001), childhood pneumonia or bronchitis (2·43, 1·44–4·10; p=0·002), parental history
of respiratory disease (1·44, 1·02–2·04; p=0·040), and low education attainment (p=0·045) …

Zero-dimensional MoS 2 quantum dots (QDs) possess distinct physical and chemical
properties, which have garnered them considerable attention and facilitates their use in a broad …

… Funnel plots of ORs with Egger’s linear regression (t=2.00, P=0.058) and Begg’s rank
correlation (Z=0.75, P=0.455) showing no significant publication bias. Subgroup analysis showed …

Recently, many researchers paid more attentions to the association between air pollution
and chronic obstructive pulmonary disease (COPD). Haze, a severe form of outdoor air …

… between the two areas (86.8% vs 87.9%, p = 0.458). The valid response rate in subjects aged
… p<0.05 kitchen vs living room; †p<0.05 kitchen vs outdoor; ‡p<0.05 living room vs outdoor. …

Little is known about chronic obstructive pulmonary disease (COPD) in Chinese nonsmokers.
The present study aimed to investigate the profiles of COPD among nonsmokers based on …