Skip to main content

Table 3 Differences in pulmonary function between groups with and without pneumothorax evaluated by univariate analysis*

From: The role of clinical characteristics and pulmonary function testing in predicting risk of pneumothorax by CT-guided percutaneous core needle biopsy of the lung

Clinical characteristics All patients studied Pneumothorax
  Median Lower quartile –upper quartile Yes* No* Z P Value
No. of cases analyzed 343   50 (14.6%) 293 (85.4%)   
Pulmonary function characteristics       
 FVC (% pred) 103.3 92.0–115.5 105.0 (93.3–114.8) 103.0 (91.6–115.7) − 0.363 0.716
 FEV1 (L) 2.4 2.0–2.9 2.4 (1.9–2.7) 2.4 (2.0–3.0) − 0.700 0.484
 FEV1 (% pred) 98.0 81.7–109.9 94.8 (79.4–106.8) 98.4 (82.0–110.1) − 1.101 0.271
 FEV1/FVC ratio (%) 76.0 69.1–81.2 72.5 (67.1–78.4) 76.6 (69.8–81.5) − 2.897 0.004
 FEF25% (% pred) 88.4 64.0–106.1 73.5 (56.5–102.5) 89.5 (66.6–106.5) − 1.950 0.051
 FEF50% (% pred) 72.8 48.9–94.6 58.5 (39.8–84.5) 77.5 (51.7–95.9) − 2.458 0.014
 FEF75% (% pred) 66.4 44.7–89.9 55.7 (42.1–79.4) 70.5 (45.4–91.1) − 2.085 0.037
 FEF25–75% (% pred) 58.0 37.4–78.6 44.3 (30.0–66.3) 59.6 (39.4–79.8) − 2.134 0.033
 PEF (% pred) 104.4 84.4–119.6 101.5 (83.2–114.7) 104.5 (85.0–121.0) − 1.253 0.210
 MVV (% pred) 95.7 83.3–111.9 96.4 (83.6–109.2) 95.5 (83.2–112.7) − 0.382 0.703
  1. Significant difference (P<0.05) are shown in bold
  2. *Data are shown as median (lower quartile to upper quartile)
  3. Mann–Whitney U test. All the quantitative data showed non-normal distribution by Shapiro–Wilk test