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Table 2 Clinical and biological data of the patients according to the E. coli O1K1 subgroups

From: Genome sequencing of strains of the most prevalent clonal group of O1:K1:H7 Escherichia coli that causes neonatal meningitis in France

Clinical and biological characteristics Prevalence of characteristics among the following subgroups:  
D-1 (n = 28) A + D-2 + D-3a (n = 10) p value*
Gender (M/W) 12/14 (26) 5/3 (8) 0.69
Median of term (AW) 37 [29–41] (20) 39 [34–41] (6) 0.18
Median of birth weight (grams) 3160 [950–3630] (19) 3555 [2260–4240] (6) 0.13
Median of age at the LP (days) 13.5 [1–136] (28) 28 [3–145] (9) 0.25
Median of CSF glucose (mmol/l) 0.4 [0–3.6] (12) 1.9 [0.4–3.4] (4) 0.22
Median of CSF protein (g/l) 2.2 [0.7–5.1] (12) 1.6 [1.1–10] (3) 1
Median of number of cells in CSF (/mm3) 9300 [800–60,000] (12) 1320 [60–3158] (4) 0.02
Median of neutrophil polynuclear % in CSF 85 [72–95] (9) 92 [90–95] (3) 0.48
% of Positive blood culture 54 (11) 50 (4) 1
  1. Values in parentheses correspond to the number of patients for whom information as available
  2. Values in brackets correspond to minimum and maximum
  3. *Fisher’s exact test was used for comparison of proportion and categorical variables
  4. *Mann-Whitney test was used for comparison of median and continuous variables
  5. aSubgroup A and clusters D-2 and D-3 have been merged for the statistical analysis