TABLE 1

Factors associated with intestinal colonization of CR-GNB among ICU patientse

CharacteristicNo. (%) of patients in the following groups with the indicated characteristic:Univariate analysis P valueMultivariate logistic regression analysis
All patients (n = 275)CR-GNB carriers (n = 32)Non-CR-GNB carriers (n = 243)P valueaaOR (95% CI)
Male patients149 (54.2)14 (43.8)135 (55.6)0.199
Age >65 yr119 (43.3)16 (50.0)103 (42.4)0.497
Secondary school educationb190 (69.1)19 (59.4)171 (70.4)0.174
≥5 family membersc52 (18.9)4 (12.5)48 (19.8)0.381
Family income of <10,000 bahtd168 (61.1)18 (56.3)150 (61.7)0.405
Urban living85 (30.9)11 (34.4)74 (30.5)0.520
Antibiotic usage within previous 3 mo93 (33.8)17 (53.1)76 (31.3)0.0170.2781.614 (0.679–3.836)
Hospitalization within previous 6 mo89 (32.4)19 (59.4)70 (28.8)0.0010.0023.818 (1.642–8.878)
Referral of patients from:
    Home99 (36.0)10 (31.3)89 (36.6)0.722
    Another hospital73 (26.5)7 (21.9)66 (27.2)0.654
    Another ward within hospital92 (33.5)12 (37.5)80 (32.9)0.434
Principle diagnosis
    Respiratory tract disease69 (25.1)13 (40.6)56 (23.0)0.0340.0512.309 (0.996–5.353)
    Cardiovascular disease35 (12.7)6 (18.8)29 (11.9)0.271
    Renal disease19 (6.9)3 (9.4)16 (6.6)0.477
    Sepsis41 (14.9)4 (12.5)37 (15.2)0.797
Underlying condition
    Cardiovascular disease130 (47.3)14 (43.8)116 (47.7)0.665
    Diabetes71 (25.8)11 (34.4)60 (24.7)0.233
    Respiratory tract disease35 (12.7)6 (18.8)29 (11.9)0.264
    Renal disease38 (13.8)5 (15.6)33 (13.6)0.784
    Liver disease18 (6.5)1 (3.1)17 (7.0)0.704
Length of ICU stay (day)
    <8 days165 (60.0)17 (53.1)148 (60.9)0.274
    8–14 days51 (14.5)7 (21.9)44 (18.1)0.666
    15–21 days29 (10.5)5 (15.6)24 (9.9)0.362
    >21 days14 (5.1)2 (6.3)12 (4.9)0.678
30-day mortality35 (12.7)4 (12.5)31 (12.8)1.000
  • a A P value of <0.05 was considered statistically significant.

  • b Basic education in Thailand consists of 6 years of primary school education and 6 years of secondary school education.

  • c Average number of household members.

  • d The average minimum income per month is 10,000 baht.

  • e Data are for a total of 275 patients.