Table 1 Characteristics of cases of S marcescens sepsis versus uninfected, sepsis with E Coli, and sepsis with E Coli>7 days of life controls.
| Characteristic | Median (Range) | |||
|---|---|---|---|---|
| S marcescens (n = 25) | Uninfected controls (n = 50) | E Coli (n = 50) | E Coli>7 days (n = 68) | |
| BW (g) | 1235(470–3350) | 1250(590–3360) | 1129(570–3830) | 1470(545–4610) |
| GA (wks) | 28(23–40) | 31(23–40) | 28(24–42) | 30(23–42) |
| Day of life at positive culture | 33(13–146) | N/A | 10(1–117)* | 22(8–117)** |
| Number of days from surgery to onset of infection | 15(1–65) | N/A | 27(1–61) | 19(1–74) |
| Number of days with central line¶ | 16(1–43) | N/A | 8(2–49) | 13(1–38) |
| Number of days receiving antibiotics¶ | 11(0–50) | N/A | 2(0–58)* | 3(0–62)** |
| Platelet count | 220(5–511) | N/A | 238(10–504) | 207(8–504) |
| White blood cell count | 13.5(3–62) | N/A | 11.3(2–57) | 11.8(0.2–56) |
¶Prior to onset of infection
*P<0.001
**P = 0.001