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Table 1 Prevalence, incidence and incidence rate of Blastocystis infection in the orphanage, Bangkok, Thailand from April 2003 to April 2004.

From: Incidence and risk factors of Blastocystis infection in an orphanage in Bangkok, Thailand

  Prevalence Incidence Time Incidence rate Total
  N (%) N (%) (person- months) (100 person- months)  
April 2003 94 (27.4) - - - 343
June 2003 35 (10.4) 9 (2.7) 450.2 1.9 336
August 2003 29 (8.6) 9 (2.7) 470.9 1.9 336
October 2003 23 (7.2) 5 (1.6) 259.1 1.9 319
December 2003 19 (6.6) 9 (3.1) 283.3 3.2 287
February 2004 26 (7.7) 6 (1.8) 462.6 1.3 339
April 2004 26 (8.5) 8 (2.6) 433.1 1.8 305