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Table 1 Characteristic analysis on M. pneumoniae cases during 2011–2016. Data were represented as n (%) in total cases, and as n (positivity, %) in M. pneumoniae cases

From: Epidemiological characterization of respiratory tract infections caused by Mycoplasma pneumoniae during epidemic and post-epidemic periods in North China, from 2011 to 2016

Characteristic Total M. pneumoniae cases P value
Age, median (IQR) 16 (53) 11 (19)  
 Children 3983 (50.8) 786 (19.7) <  0.001
 Adults 3852 (49.2) 341 (8.9)
Gender    0.003
 Female 3514 (44.9) 552 (15.7)  
 Male 4321 (55.1) 575 (13.3)  
Sample types    <  0.001
 Oropharyngeal swab 5196 (66.3) 883 (17.0)  
 Sputum 2290 (29.2) 225 (9.8)  
 Balf a 332 (4.2) 19 (5.7)  
 Others 17 (0.3) 0 (0)  
Site of care    <  0.001
 Outpatients 3427 (43.7) 531 (15.5)  
 Wards 3771 (48.1) 582 (15.4)  
 RICU and EICU 357 (4.6) 11 (3.1)  
 Other ICUs 280 (3.6) 3 (1.1)  
Total 7835 1127 (14.4)  
  1. aBalf: bronchoalveolar lavage fluid
  2. P value: statistical analyses were performed within M. pneumoniae cases