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Table 2 Characteristics of students with asymptomatic PSP (APSP)

From: The incidence and risk factors of asymptomatic primary spontaneous pneumothorax detected during health check-ups

  All case APSP  
  N Mean SEM N Mean SEM z-value  
Male
 Age 78,678 22.11 0.01 39 20.23 0.69 −3.20 *
 BH (cm) 78,081 172.19 0.02 39 174.05 0.98 1.98 *
 BW (kg) 78,081 62.95 0.03 39 56.58 1.05 −4.12 *
 BMI 78,081 21.21 0.01 39 18.66 0.29 −5.46 *
 BH change (cm/year) 43,769 0.21 0.00 34 0.62 0.11 3.59 *
 sBP (mmHg) 78,646 119.93 0.05 39 116.26 1.83 −1.71  
 dBP (mmHg) 78,646 66.42 0.03 39 66.03 1.31 −0.28  
 PR (/min) 76,060 74.35 0.05 39 79.36 2.59 2.30 *
Female
 Age 22,851 23.04 0.03 4 24.75 4.21 0.74  
 BH (cm) 22,642 159.69 0.04 4 164.40 0.51 1.72  
 BW (kg) 22,641 51.03 0.05 4 50.80 2.84 −0.07  
 BMI 22,641 19.99 0.02 4 18.80 0.93 −1.01  
 BH change (cm/year) 12,003 0.17 0.01 3 1.13 0.20 2.75 *
 sBP (mmHg) 22,837 107.11 0.08 4 101.75 4.23 −0.91  
 dBP (mmHg) 22,836 61.93 0.05 4 59.25 5.41 −0.67  
 PR (/min) 22,244 77.74 0.08 4 78.00 6.18 0.04  
  1. APSP asymptomatic primary spontaneous pneumothorax, BH body height, BW body weight, BMI body mass index, sBP systolic blood pressure, dBP diastolic blood pressure, PR pulse rate
  2. *: |z| > 1.96