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Table 1 Demographic characteristics and geometric mean serotiters

From: Asymptomatic ratio for seasonal H1N1 influenza infection among schoolchildren in Taiwan

Characteristics   KM CH TP IL Total
   n (%) n (%) n (%) n (%) n (%)
Cohort size   71 (27.84) 60 (23.53) 43 (16.86) 81 (31.76) 255
Gender Male 31 (43.66) 36 (60.00) 16 (37.21) 41 (50.62) 124 (48.63)
Female 38 (53.52) 24 (40.00) 22 (51.16) 40 (49.38) 124 (48.63)
Missing 2 (2.82) 0 (0.00) 5 (11.63) 0 (0.00) 7 (2.75)
Grade 1-3 23 (32.39) 29 (48.33) 19 (44.19) 30 (37.04) 101 (39.61)
4-6 48 (67.61) 31 (51.67) 24 (55.81) 50 (61.73) 153 (60.00)
Missing 0 (0.00) 0 (0.00) 0 (0.00) 1 (1.23) 1 (0.39)
GMT (pre-season)   16.94 13.82 13.58 11.57 13.78
GMT (post-season)   41.59 19.32 21.76 25.41 26.67
  1. 255 unvaccinated schoolchildren from Taipei City (TP), Changhua (CH), Ilan (IL), and Kinmen (KM) participated in the study.