Table 3 Change of colonisation status during follow-up prevalence (Y-2: 2 years before ETI introduction, Y-1: 1 year before ETI introduction, Y0: at ETI introduction, Y + 1: year following ETI introduction) depending on different patients’ clinical characteristics. Change of colonisation prevalence during follow-up depending on age quartiles at Y0. Change of colonisation prevalence during follow-up depending on ppFEV1 groups according to ppFEV1 at Y0. Change of colonisation prevalence during follow-up for three groups defined by terciles of gain in ppFEV1 under ETI treatment.

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

Prevalence of colonisation with at least one bacteria of interest - % (n)

Age range (years)

18–23

98 (49)

96 (48)

96 (50)

81 (39)

p = 0.03

23–28

100 (46)

100 (46)

100 (46)

87 (34)

28–34

100 (51)

100 (51)

100 (51)

100 (44)

34–60

100 (45)

100 (47)

98 (46)

91 (42)

ppFEV1 at Y0 (%)

< 30%

100 (11)

100 (12)

100 (12)

100 (12)

p = 0.06

30–50%

100 (63)

100 (63)

98 (62)

97 (57)

50–70%

100 (53)

100 (53)

98 (54)

84 (41)

≥ 70%

98 (62)

97 (62)

98 (63)

86 (48)

Change in ppFEV1 with ETI (%)

0–15%

100 (63)

100 (64)

98 (65)

88 (51)

p = 0.88

15–20%

100 (65)

98 (65)

98 (65)

92 (56)

20–35%

98 (65)

98 (65)

98 (65)

92 (54)

  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.