Table 2 Prevalence of colonisation for the seven CF pathogens of interest during the 3 years before and the year after the initiation of ETI.  Colonisation was defined by the positivity of at least one sputum during the year (Y-2: status 2 years before ETI introduction, Y-1: status 1 year before ETI introduction, Y0: status at ETI introduction, Y + 1: status the year following ETI introduction).

From: One year of ETI reduces lung bacterial colonisation in adults with cystic fibrosis

 

Y-2

N = 194

Y-1

N = 196

Y0

N = 198

Y + 1

N = 179

p-value1

Number of sputum culture -mean (SD)

4.4 (2.0)

3.9 (1.7)

4.5 (1.8)

3.1 (1.7)

 
 

% (n)

[95% CI]

% (n)

[95% CI]

% (n)

[95% CI]

% (n)

[95% CI]

 

Pseudomonas aeruginosa

69.0 (134)

[62–75]

73.0 (144)

[67–79]

72.0 (142)

[65–78]

59.0 (105)

[51–66]

< 0.001

MRSA

12.0 (23)

[7.8–17]

11.0 (22)

[7.3–17]

9.6 (19)

[6.0–15]

4.5 (8)

[2.1–8.9]

< 0.001

MSSA

74.0 (144)

[67–80]

73.0 (144)

[67–79]

71.0 (141)

[64–77]

64.0 (115)

[57–71]

0.012

Haeomophilus influenzae

8.8 (17)

[5.3–14]

11.0 (21)

[6.9–16]

5.6 (11)

[2.9–10]

8.4 (15)

[4.9–14]

0.9

Stenotrophomonas maltophilia

21.0 (40)

[15–27]

15.0 (29)

[10–21]

19.0 (37)

[14–25]

7.3 (13)

[4.1–12]

< 0.001

Achromobacter spp.

15.0 (29)

[10–21]

17.0 (33)

[12–23]

16.0 (32)

[11–22]

11.0 (20)

[7.2–17]

0.007

Burkholderia cepacia complex species

5.7 (11)

[3.0–10]

7.1 (14)

[4.1–12]

6.6 (13)

[3.7–11]

5.0 (9)

[2.5–9.6]

0.13

Nontuberculous mycobacteria

7.2 (14)

[4.2–12]

8.7 (17)

[5.3–14]

10.0 (20)

[6.4–15]

1.7 (3)

[0.44–5.2]

< 0.001

Any of the bacteria above

99.0 (193)

[97–100]

99.0 (194)

[96–100]

98.0 (195)

[95–100]

90.0 (161)

[84–94]

< 0.001

  1. 1p-value: result of the test of the treatment effect on colonisation using a logistic mixed model comparing the year after the treatment introduction to the three years before. The p-values were adjusted using the Holm method.
  2. CI = Confidence Interval; MRSA: Methicillin-Resistant Staphylococcus aureus; MSSA: Methicillin-Sensitive Staphylococcus Aureus.