Table 2 Demographics by age at enrollment

Age at enrollment,^a y

n = 121

n = 148

n = 269

 Mean (SD)

5.7 (4.7)

48.8 (15.4)

29.4 (24.5)

 Median (min, max)

4.3 (−0.01, 17.3)

51.4 (18.5, 78.9)

26.0 (−0.01, 78.9)

Sex, n (%)

n = 121

n = 148

n = 269

 Female

74 (61.2)

108 (73.0)

182 (67.7)

Race,^b n (%)

n = 111

n = 140

n = 251

 White

64 (57.7)

126 (90.0)

190 (75.7)

 Asian

35 (31.5)

3 (2.1)

38 (15.1)

 American Indian or Alaska Native

0

2 (1.4)

2 (0.8)

 Native Hawaiian or other Pacific Islander

0

1 (0.7)

1 (0.4)

 Other/multiple

5 (4.5)

4 (2.9)

9 (3.6)

 Not reported

7 (6.3)

4 (2.9)

11 (4.4)

Ethnicity,^b n (%)

n = 121

n = 147

n = 268

 Not Hispanic or Latino

103 (85.1)

116 (78.9)

219 (81.7)

 Hispanic or Latino

4 (3.3)

18 (12.2)

22 (8.2)

 Not reported

14 (11.6)

13 (8.8)

27 (10.1)

Family history of HPP, n (%)

n = 117

n = 135

n = 252

 Yes

50 (42.7)

66 (48.9)

116 (46.0)

 No

61 (52.1)

54 (40.0)

115 (45.6)

 Not reported

6 (5.1)

15 (11.1)

21 (8.3)

Treated with asfotase alfa at enrollment, n (%)

n = 121

n = 148

n = 269

 Yes

45 (37.2)

26 (17.6)

71 (26.4)