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Table 3 The prevalence and OR for COPD by smoking status in the Korean adults

From: Association between dual use of e-cigarette and cigarette and chronic obstructive pulmonary disease: an analysis of a nationwide representative sample from 2013 to 2018

 

Prevalence (%, 95% CI)

OR (95% CI)

P-value

Total (n = 12,919)

8.8 (8.3–9.4)

  

Non-users (n = 6924)

6.0 (5.4–6.6)

1

 

Former smokers (n = 3282)

10.7 (9.5–12.1)

1.67 (1.31–2.12)

 < 0.001

Current smokers (n = 2549)

12.9 (11.4–14.6)

2.26 (1.77–2.88)

 < 0.001

Dual users (n = 164)

13.8 (8.9–20.7)

2.83 (1.64–4.86)

 < 0.001

Ptrend

 < 0.001

 < 0.001*

 

Men (n = 6596)

10.8 (10.0–11.8)

  

Non-users (n = 1165)

5.7 (4.4–7.5)

1

 

Former smokers (n = 3039)

10.8 (9.5–12.2)

1.81 (1.31–2.49)

 < 0.001

Current smokers (n = 2237)

13.2 (11.6–15.0)

2.69 (1.93–3.75)

 < 0.001

Dual users (n = 155)

14.1 (9.0–21.3)

3.46 (1.89–6.34)

 < 0.001

Ptrend

 < 0.001

 < 0.001*

 

Women (n = 6323)

6.4 (5.7–7.1)

  

Non-users (n = 5759)

6.0 (5.4–6.7)

1

 

Former smokers (n = 243)

9.7 (6.1–15.0)

1.62 (0.96–2.74)

0.059

Current smokers (n = 312)

10.1 (6.9–14.5)

1.47 (0.93–2.34)

0.100

Dual users (n = 9)

7.8 (0.9–39.2)

1.09 (0.14–8.48)

0.950

Ptrend

 < 0.001

0.038*

 
  1. Considering that the Korea National Health and Nutrition Examination Survey is a multi-stage clustered probability design, weighted percentages and 95% CIs were presented
  2. Odds ratios and 95% CIs were calculated after adjustment for sex, age, residence, education, household income, alcohol consumption, and body mass index
  3. COPD, chronic obstructive pulmonary disease; OR, odds ratio; CI, confidence interval
  4. *P-value for trend was calculated using complex sample logistic regression analysis considering smoking status as a continuous variable
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BMC Pulmonary Medicine

ISSN: 1471-2466

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