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Table 1 Characteristics of patients with COPD patients and controls

From: LINC01414/LINC00824 genetic polymorphisms in association with the susceptibility of chronic obstructive pulmonary disease

Variable

Cases

Controls

p

n

315

314

 

Age, (mean ± SD) year

71.9 ± 10.1

71.2 ± 6.8

0.307

Gender (male/female), n

239/76

237/77

0.926

Smoking (current/former/never/unavailable), n

83/64/166/2

34/18/118/114

 

BMI, (≤ 24 kg/m2/ > 24 kg/m2/unavailable), n

251/29/35

67/78/169

 

COPD with complication (yes/no/unavailable), n

93/174/48

  

COPD with wheezing

153/123/39

  

COPD with dyspnea

115/166/34

  

COPD with chest distress

102/179/34

  

respiratory rate, times/min

22.3 ± 2.5

  

pulse rate, times/min

86.3 ± 11.7

  

FVC, L

2.0 ± 0.7

  

FEV1, L

1.1 ± 0.6

  

FEV1/FVC, %

51.4 ± 11.8

  

GOLD spirometric grade, n (%)

 1

34 (10.8%)

  

 2

107 (46.7%)

  

 3

102 (32.4%)

  

 4

32 (10.2%)

  
  1. COPD chronic obstructive pulmonary disease, BMI body mass index, FVC including forced vital capacity, FEV1 forced the first second of expiratory volume, GOLD Global Initiative for Chronic Obstructive Lung Disease
  2. p values were calculated by χ2 test or the Student’s t test