Table 3 Distribution of groups according to the mean annual number of very-low-birth-weight infants registered in Korean Neonatal Network among three groups.

From: The Influence of the Variation in Sepsis Rate between Neonatal Intensive Care Units on Neonatal Outcomes in Very-Low-Birth-Weight Infants

Groups

Low sepsis group (N = 1,873)

Intermediate sepsis group (N = 3,631)

High sepsis group (N = 1,989)

1

8 (0.4%)

124 (3.4%)

6 (0.3%)

2

118 (6.3%)

384 (10.6%)

138 (6.9%)

3

285 (15.2%)

579 (15.9%)

156 (7.8%)

4

200 (10.7%)

264 (7.3%)

426 (21.4%)

5

158 (8.4%)

384 (10.6%)

401 (20.2%)

6

716 (38.2%)

635 (17.5%)

406 (20.4%)

7

388 (20.7%)

1261 (34.7%)

456 (22.9%)

Median group (25th, 75th percentile)

Group 6 (Group 4, Group 6)

Group 6 (Group 3, Group 7)

Group 5 (Group 4, Group 6)

  1. Group 1; mean annual very-low-birthweight infants 〈10 patients per year, Group 2; ≥10 and <20, Group 3; ≥20 and <30, Group 4; ≥30 and <40, Group 5; ≥40 and <50, Group 6; ≥50 and <100, Group 7; ≥100.
  2. P-value = 0.051 by Kruskal-Wallis test.
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