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Table 2 Prevalence data from newborn screening studies

From: FMR1 CGG allele size and prevalence ascertained through newborn screening in the United States

Reference

Location

Ethnicity

Number tested

Gender

Genotype

CGG range

Number positive

Prevalence

[23]

Georgia, USA

45% Caucasian

36,124

Male

Full

>200

7

-

  

30% African-American

      
  

15% Hispanic

      
  

2% Asian

      
  

2% Multicultural

      
  

1% American Indian

      
  

5% Unknown

      

[37]

Taiwan

Asian

4,843

Male

Gray

40-54

90

-

     

Pre

55-200

2

-

     

Full

>200

2a

-

[87]

Canada

Canadian

1,000

Male

Gray

40-60

51b

-

   

1,000

Female

Pre

>60

1c

-

[30]

Spain

Hispanic

5,267

Male

Gray

45-54

199

1/26

     

Pre

55-200

21

1/251

     

Full

>200

2

1/2633

[51]

Catalan, Spain

Hispanic

5,000

Male

Gray

53-55

11

1/449

     

Pre

56-200

4

1/1233

     

Full

>200

2

1/2466

[43]

South Carolina, USA

NAd

1,459

Male

Pre

55-200

2

1/730

     

Full

>200

2

1/730

[36]

Taiwan

Asian

10,046

Male

Gray

45-54

70

1/143

     

Pre

55-200

6

1/1674

     

Full

>200

1e

-

  1. aNeed Southern blot confirmation. bNumber positive includes both genders. cGender of the positive premutation is male. dRacial data not collected for this study. eNot confirmed.