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Table 2 Univariable analysis of overall survival (OS)

From: The impact of diagnostic delay on survival in alpha-1-antitrypsin deficiency: results from the Austrian Alpha-1 Lung Registry

Variable

n

5-year survival rate, %

10-year survival rate, %

15-year survival rate, %

p value (log-rank test)

Total

268

96.2

92.0

85.5

Sex (n = 268)

Male

166

96.1

90.0

83.3

0.745

Female

102

96.5

96.5

89.6

Age at inclusion into registry (years) (n = 268)

≤ 65

224

96.8

92.8

86.6

0.042

> 65

44

93.4

87.9

80.6

Diagnostic delay (years) (n = 268)

≤ 2

62

100

100

95.2

0.080

> 2

206

94.8

88.9

81.7

Phenotype (n = 268)

Pi*ZZ

220

96.9

92.4

85.6

0.633

other

48

91.7

91.7

91.7

Body mass index (BMI) at inclusion into registry (kg/m2) (n = 268)

≤ 25

168

95.1

91.2

82.9

0.071

> 25

100

98.7

93.8

90.4

Smoking status at time of inclusion into registry (n = 266)

Never

75

98.5

95.9

86.5

0.002

Yes, ex-smoker

181

95.8

92.0

86.5

Yes, active smoking

10

80.0

0.0

0.0

Active smoking at time of inclusion into registry (n = 266)

No

256

96.7

93.2

86.6

< 0.001

Yes

10

80.0

0.0

0.0

Reason for being tested (n = 263)

Symptomatic disease

243

96.4

92.5

84.9

0.324

Family-based screening

20

94.1

85.6

85.6

Diagnosis of chronic obstructive pulmonary disease (COPD) at inclusion into registry, as self-reported by the patient (n = 268)

No

150

96.7

93.4

88.8

0.101

Yes

118

95.4

88.1

70.2

Diagnosis of emphysema at inclusion into registry, as self-reported by the patient (n = 268)

No

97

100

95.7

95.7

0.092

Yes

171

94.7

90.5

82.6

Forced expiratory volume in 1 s (FEV1) in % of the expected value at inclusion into registry (n = 265)

≤ 50%

143

94.5

89.3

80.2

0.004

> 50%

122

99.0

96.7

96.7

Cardiovascular comorbidity (n = 268)

No

244

96.5

92.8

85.5

0.180

Yes

24

91.7

83.3

83.3

History of exacerbation at inclusion into registry (n = 157)

No

101

98.8

95.0

95.0

0.011

Yes

56

89.6

83.6

54.9

Treatment with inhalative antiobstructive agents at inclusion into registry (n = 268)

No

25

100

88.9

88.9

0.561

Yes

243

95.8

92.2

85.1

Long-term oxygen therapy at inclusion into registry (n = 266)

No

216

98.0

93.5

90.6

0.002

Yes

50

88.2

84.6

68.5

AAT augmentation therapy at inclusion into registry (n = 268)

No

157

92.4

88.0

85.4

0.308

Yes

111

100

95.8

86.8

  1. Statistical significance (corrected by Bonferroni method): p value < 0.0031
  2. AAT alpha-1-antitrypsin, AATD alpha-1-antitrypsin deficiency, BMI body mass index, COPD chronic obstructive pulmonary disease, FEV1 forced expiratory volume in 1 s