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Table 3 Clinical results of Shigella infections between 1995 and 2008.

From: A changing picture of shigellosis in southern Vietnam: shifting species dominance, antimicrobial susceptibility and clinical presentation

  A (1995 - 1996) B (2000 - 2002) C (2007 - 2008) Combined pvaluea
Pateints n = 63 n = 113 n = 103 n = 279  
Age (months)d 23 (17 - 48) 21 (14 - 29) 30 (19 - 42) 24 (16 - 36) < 0.001
Weight (kg) 10 (9 - 13) 10 (9 - 12) 11.5 (10 - 15) 10.5 (9 - 13) 0.004
Male sex (%) 31 (49) 50 (44) 61 (59) 184 (59%) 0.085
Patient history      
Days 2 (1 - 7) 2 (1 - 9) 1 (1 - 4) 2 (1 - 9) < 0.001
Fever (%) 62 (98) 104 (92) 100 (97) 266 (95) 0.09
Abdominal pain (%) 33 (52) 41 (36) 79 (76) 153 (54) < 0.001
Vomitting (%) 24 (38) 64 (56) 51 (49) 139 (50) 0.062
Watery diarrhea (%) 28 (44) 67 (59) 74 (71) 169 (60) 0.002
Bloody/mucoid diarrhea (%) 63 (100) 60 (53) 98 (95) 221 (79) < 0.001
Diahorreal episodes per day NA 8 (5-10) 8 (5-10) 8 (5-10) 0.595
Convulsions (%) 4 (6) 7 (6) 20 (19.4) 31 (11) < 0.001
Known pretreatment (%) 3 (5) 8 (7) 4 (4) 14 (5) 0.543
Clinical details      
Serotype sonnei (%) 21/63 (33) 55/113 (49) 71/103 (69) 153/279 (55) < 0.001
White cell count (× 103/mm3) 10 (8.3 - 15) 10.1 (7.7 - 12.8) 13.1 (10.1 - 17.3) 11.3 (8.7 - 15.4) < 0.001
Red cells in stoolb NA 1 1 1 0.715
White cells in stoolb NA 3 3 3 0.02
Mucoid duration (hrs) 31.5 (24 - 53.5) 36 (24 - 54) 28 (18 - 48) 30 (19.5 - 48) 0.113
Diarrhea duration (hrs) 48.5 (29.25 - 87) 48 (24 - 72) 48 (30 - 72) 48 (26.75 - 72) 0.402
Duration of illness      
Hospital stay (days) 3 (1 - 12) 4 (1 -15) 5 (2 - 14) 4 (1 -15) < 0.001
Disease duration (days)c 4 (2 - 15) 6 (3 - 18) 6 (3 - 15) 6 (2 - 18) < 0.001
  1. a p Values calculated using either Chi-square test or the Kruskal-Wallis test
  2. b Cells in Stools assessed as described in methods
  3. c Disease duration calculated by addition of history of disease and stay in hospital
  4. d Interquartile range values in brackets unless stated