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Table 3 Number of deaths (n) and SMRs among the NF1 patients by age group

From: Mortality Associated with Neurofibromatosis 1: A Cohort Study of 1895 Patients in 1980-2006 in France

Age, years

Person- Years

Observed Deaths

Expected Deaths

SMR

95%CI

<10

11 905.5

4

4.2

0.95

0.3-2.4

10 to <20

8875

11

2.1

5.2

2.6-9.3

20 to <40

10 395

31

7.6

4.1

2.8-5.8

40 to <60

3657.5

11

11.6

0.9

0.5-1.7

≥60

480

10

7.7

1.3

0.6-2.4

  1. SMR, standardized mortality ratio (observed deaths/expected deaths); 95%CI, 95% confidence interval
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Orphanet Journal of Rare Diseases

ISSN: 1750-1172