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Table 2 Demographic characteristics, scanner dose and apnea duration in FDCT and LDCT groups

From: Submillisievert CT chest for COVID-19 patients in a rural hospital with limited resources

  FDCT LDCT P value
Total examinations 269 194  
Period April–Dec 2020 Dec 2020–March 2021  
Age    P = 0.8729a
Median (IQR) 55 (30) 56 (20)  
[min–max] [14–92] [20–96]  
Sex    P = 0.0357b
Male 126 (46.8%) 110 (56.7%)  
Female 143 (53.2%) 84 (43.3%)  
Weight    P = 0.2501a
Mean (SD) 85 (15) 79 (14)  
[min–max] [60–112] [59–110]  
DLP (mGy*cm)    P < 0.0001a
Median (IQR) 341.1 [204.1] 30.8 (3.9)  
[min–max] [72.6–975.6] [8.4–71.1]  
CTDI    P < 0.0001a
Median (IQR) 11.3 (5.5) 0.9 (0)  
[min–max] [0.4–29.8] [0.3–2.6]  
Duration of apnea    P < 0.0001a
Median (IQR) 13.29 (4.9) 8.27 (1.2)  
[min–max] [7.02–37.26] [6.71–15.78]  
  1. DLP, Dose length product; CTDI, CT dose index
  2. aTwo-tailed Mann–Whitney U test
  3. bFisher Exact test