在15年的中位随访中,3925名参与者在340 757人年的随访中发生了COPD相关事件(发病率密度为11.5 / 1000人年),包括3563例与COPD相关的住院和447例与COPD相关的死亡。 With respect to discrimination of COPD-related events, the o...
在15年的中位随访中,3925名参与者在340 757人年的随访中发生了COPD相关事件(发病率密度为11.5 / 1000人年),包括3563例与COPD相关的住院和447例与COPD相关的死亡。 With respect to discrimination of COPD-related events, the optimal fixed threshold (0.71; C statistic for optimal fixed threshold, 0.696) w...
Exposures Presence of airflow obstruction, which was defined by a baseline FEV1:FVC less than a range of fixed thresholds (0.75 to 0.65) or less than the lower limit of normal as defined by Global Lung Initiative reference equations (LLN). Main Outcomes and Measures The primary outcome was ...
Rationale: Chronic obstructive pulmonary disease (COPD) is thought to result in rapid and progressive loss of lung function usually expressed as mean values for whole cohorts. Objectives: Longitudinal studies evaluating individual lung function loss and other domains of COPD progression are needed. Metho...
Furthermore, as age increases, more and more people have a ratio in the “COPD” range, and in young children, FEV1/FVC of 75% is very abnormal183; so using a fixed ratio across the developmental spectrum is akin to defining short stature as being 120 cm tall without knowing the age...
FEV1/FVC median values among current [1.00; interquartile range (IQR): 0.94-1.04] and former smokers (0.98; IQR: 0.93-1.04) were lower than those ... SC Oancea,JG Gurney,KK Ness,... - 《Cancer Epidemiology Biomarkers & Prevention》 被引量: 5发表: 2014年 ...
Methods: This cross-sectional study was carried out in the Department of Physiology, Rangpur Medical College, Rangpur, from July 2008 to June 2009 on 50 apparently healthy male smoker (Group B) and 40 non-smoker (Group C) tobacco industry workers with age range 20 to 45 years. For ...
Notably, it has been reported that in almost 75% of patients older than 65 years old diagnosed with mild COPD using the GOLD criteria, the measured FEV1/FVC values are within the normal range for healthy age-related and race-matched controls30. Thus, although the fixed FEV1/FVC ratio ...
From 255 enrolled patients diagnosed with COPD in outpatient and inpatient, their pulmonary function and the bronchial dilation were tested to assess the change value, the change rate and the range of positive reversibility of FEV 1 and FVC. Descriptive analysis was calculated with mean ...
Categorical variables were expressed as percentages while continuous variables were expressed as mean ± standard deviation (SD) or median with interquartile range. The difference between groups for the categorical variables was compared using the chi-squared test, with post-hoc analysis taking adju...