Table 5 Comparison of Mean FsIQ, VIQ, PIQ in different populations with sickle cell disease in Europe and USA

8.5

NR

70.8-82.8-90*

72.1-79.9-88.8*

74.1-88.1-92.9*

NR

NR but IQ lower in children speaking two languages at home

13.5

9

77.3-81.1-86.7*

79.9-77.1-85.3*

77.3-81.1-86.7*

NR

NR

9.5

NR

78.6-81.1**

74.1-84.6**

77.5-78.9**

NR

NR

9.75

NR

75.05-81.91-81.67*

79.59-88.73-85.60*

74.73-77.73-80.80*

NR

NR

8.2

NR

72.7-85-90.2*

74.2-84.6-93*

75.5-83.3-89*

NR

NR

10

NR

87.15-90.33-91.22§

89.56-94.86-92§

86.9-87.93-91.96§

NR

100

8.73-11.58

NR

67.6-79-86.03*

73.6-85.25-89.07*

67.80-79.75-85.57*

NR

NR

5-15

30.7

83.9-82.6-86.6**

90.4-85.8-93.3**

80.6-83.5-82.3

NR

NR but performed in children living in France > 2 yrs

infants

NR

82.5-87.4**

BIN study early language development in infants

BIN measures of early language development in infants

100

BIN measures of All families spoke English, and in the majority of cases, infants were also exposed to a non-English

79-80**

80-82**

80-77**

NR

NR

12.2

30

80

83

79

100

46 (immigrants from Netherland Antilles)

8.9

25

86.9

84.5

91.7

100

1