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Table 4 Mean durations of courses of antibiotics associated with cultures as a function of time (units of days)

From: Neonatal ICU antibiotic use trends within an integrated delivery network

NICU

Year 1

Year 2

Year 3

Year 4

Year 5

Year 6

Year 7

Year 8

Hospital 1

3.1–3.5

3.0–3.5

3.1–3.7

2.6–3.0* + 

2.5–2.9 + 

2.2–2.7* + 

2.5–3.1 + 

2.0–2.6* + 

Hospital 2

   

2.2–2.6

2.4–2.9

2.6–3.1

2.3–2.8

2.2–2.9

Hospital 3

3.2–3.8

3.4–3.9

2.9–3.6* + 

2.5–3.0* + 

2.4–3.0 + 

2.6–3.5 + 

2.3–2.9 + 

1.9–2.4 + 

Hospital 4

2.6–3.7

1.7–2.1* + 

1.8–2.4 + 

1.5–1.6 + 

1.9–2.3 + 

2.0–2.5 + 

1.7–2.0* + 

2.3–3.0

Hospital 5

2.8–4.9

2.6–3.4

2.7–3.4

2.4–3.1

2.3–2.9

1.8–2.4* + 

1.6–2.4 + 

1.5–2.7 + 

Hospital 6

    

1.9–2.2

2.2–2.7

1.9–2.3

1.9–2.2

Overall

3.2–3.5

3.1–3.4

3.0–3.4* + 

2.5–2.7* + 

2.5–2.7 + 

2.5–2.7* + 

2.3–2.6 + 

2.2–2.5 + 

Level 3

3.2–3.6

3.2–3.6

3.1–3.6* + 

2.5–2.8* + 

2.5–2.8 + 

2.6–2.9 + 

2.5–2.8 + 

2.2–2.5 + 

Level 2

2.8–3.9

2.2–2.6* + 

2.4–2.9 + 

2.0–2.5* + 

2.1–2.3 + 

2.1–2.5 + 

1.9–2.1* + 

2.1–2.4 +