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Table 4 Analysis of deviance, MD STARnet Expanded Surveillance Pilot, 2007–2011

From: Sources of variation in estimates of Duchenne and Becker muscular dystrophy prevalence in the United States

Variable

Degrees of freedom

Deviance

Percent of deviance

Age

5

527.0

73.9%

State

3

41.5

5.8%

Race/ethnicity

3

19.8

2.8%

Proportion treated at MD clinic1

1

3.3

0.4%

Average number of ascertainment sources2

1

0.1

 < 0.1%

Proportion diagnosed by genetic testing3

1

0.0

 < 0.1%

Residuals

81

121.4

17.0%

  1. MD STARnet, Muscular Dystrophy Surveillance, Research and Tracking Network
  2. 1Proportion of patients within stratum who were treated at a neuromuscular clinic
  3. 2Average number of the number reporting sources at which each patient in stratum was identified
  4. 3Proportion of cases diagnosed by genetic testing in the index case or a family member
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Orphanet Journal of Rare Diseases

ISSN: 1750-1172