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Table 1 Patient characteristics at cohort entry

From: Health-related quality of life in persons with West Nile virus infection: a longitudinal cohort study

 

Total

(n = 154)

Disease classification

Neuroinvasive

(n = 62)

Nonneuroinvasive

(n = 92)

Mean age (sd), yearsa

52 (13)

55 (15)

50 (12)

Female (%)

75 (49)

26 (42)

49 (53)

Mean follow up (sd), monthsa

11 (9)

11 (6)

9 (5)

Lost to follow-up at one year (%)

95 (62)

32 (52)

63 (68)

Comorbid conditions (%):

 Asthma

14 (9)

4 (6)

10 (11)

 COPDa

4 (3)

4 (6)

0 (0)

 Cancer

17 (11)

5 (8)

12 (13)

 Cardiac disease

21 (14)

12 (19)

9 (10)

 Cerebrovascular disease

3 (2)

2 (3)

1 (1)

 Diabetesa

11 (7)

9 (15)

2 (2)

 Liver diseasea

6 (4)

5 (8)

1 (1)

 Lung disease

16 (10)

9 (15)

7 (8)

 Renal disease

7 (5)

4 (6)

3 (3)

 Transplant

5 (3)

3 (5)

2 (2)

Mean number of comorbid conditions (sd)a

0.9 (0.10)

1.2 (0.2)

0.7 (0.1)

Prior hospitalizations (%)

118 (77)

51 (82)

67 (73)

Disease classification (%)

 Neuroinvasive

62 (40)

–

–

 Encephalitis

21 (14)

–

–

 Meningitis

3 (2)

–

–

 Acute flaccid paralysis

6 (4)

–

–

 Meningo-encephalitis

32 (21)

–

–

 Nonneuroinvasive

92 (60)

–

–

  1. Abbreviations: sd, standard deviation; COPD, chronic obstructive pulmonary disease
  2. aSignificant differences (p < 0.05) between patients with neuroinvasive and nonneuroinvasive disease. P value from independent samples t-tests