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Table 2 SARS-CoV-2 RNA, clinical disease and SARS-CoV-2 RNA antibodies (IgG) in the training and no-training arms. All data in numbers (%)

From: Covid-19 transmission in fitness centers in Norway - a randomized trial

  Total
(3,764 individuals)
Training arm
(1,896 individuals)
No-training arm
(1,868 individuals)
P-value4
SARS-CoV-2 RNA tests 3,016 (80.1) 1,682 (88.7) 1,334 (71.4)  
Positive SARS-CoV-2 RNA 1 11 (0.05) 0 0.32
Covid-19 related hospital admissions 0 0 0  
Non-Covid-19 related hospital admissions 6 (0.16) 4 (0.21) 2 (0.11) 0.42
 Cardiovascular 1 1 0  
 Gastroenterology 1 0 1  
 Surgery2 3 3 0  
 Gynecology 1 0 1  
Covid-19 outpatient contacts 0 0 0  
Non-Covid-19 outpatient contacts 106 (2.8) 48 (2.5) 58 (3.1) 0.29
 Surgery2 46 20 26  
 Gynecology 15 8 7  
 Endocrinology/nephrology 12 6 6  
 Cardiovascular 4 3 1  
 Pulmonology 3 2 1  
 Gastroenterology 6 0 6  
 Dermatology 3 2 1  
 Oncology 9 3 6  
 Neurology 8 4 4  
SARS-CoV-2 Antibody tests performed 2516 1404 1112  
Positive SARS-CoV-2 antibodies 38 (1.53) 11 (0.83) 27 (2.43) 0.008
  1. 1Infection not related to training activity
  2. 2Surgery includes orthopedics and Ear-Nose-Throat
  3. 3Percentage of SARS-CoV-2 antibody tests performed
  4. 4All statistical test are performed on the intention-to-treat level