Table 1.

Relationship between bacterial cause and clinical features at presentationa

ParameterAll EpisodesGram PositiveGram NegativeCulture NegativeP
Severe abdominal pain (n [%])204 (42)97 (45)64 (53)43 (28)<0.0001
Temperature >38°C (n [%])224 (46)108 (51)69 (58)47 (31)<0.0001
Marked effluent cloudiness (n [%])343 (70)161 (74)95 (78)87 (58)<0.0005
DSS (mean ± SD)2.02 ± 1.152.2 ± 1.12.38 ± 1.121.56 ± 1.1<0.0001
Effluent cell count (mean ± SD)1990 ± 21962023 ± 20552693 ± 27001390 ± 1787<0.0001
% polymorphonuclear cells (mean ± SD)81 ± 16.278 ± 1885 ± 1480 ± 14<0.05
Exit-site granuloma (n [%])38 (8)24 (11)7 (6)7 (5)<0.05
Exit-site S. aureus (n [%])39 (9)26 (13)5 (5)8 (6)0.01
  • a Statistical significance indicative of difference between peritonitis cause groups. DSS, disease severity score.