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. 2018 Jan;72:13–22. doi: 10.1016/j.ridd.2017.10.014

Table 2.

Educational achievement at Key Stage 4 and SEN provision, comparing controls to those with DCD.

Control (max. n = 5425) DCD (max. n = 284) p
Total number of GCSEs graded A*-C achieved: median (IQR)a Whole group 7 (4–9) n = 5425 2 (0–8) n = 284 z = 10.50, p < 0.001b
Female 8 (5–9) n = 2749 3 (0–8) n = 109 z = 6.45, p < 0.001b
Male 7 (3–9) n = 2676 2 (0–7) n = 175 z = 7.73, p < 0.001b



Proportion of adolescents achieving 5 or more GCSEs graded A*-C: n (%)a Whole group 3822 (71) n = 5425 111 (39) n = 284 z = 11.41, p < 0.001c
Female 2079 (76) n = 2749 50 (46) n = 109 z = 7.08, p < 0.001c
Male 1743 (65) n = 2676 61 (35) n = 175 z = 7.97, p < 0.001c



Special Educational Needs Provision – n (%)
No special provision at any point 4270 (83) n = 5165 100 (37) n = 273 z = 18.77, p < 0.001c
SEN provision only in primary school 372 (7) 42 (15) z = −4.92, p < 0.001c
SEN provision in only secondary school 166 (3) 25 (9) z = −5.41, p < 0.001c
SEN provision in both primary and secondary school 357 (7) 106 (39) z = −18.37, p < 0.001c
a

Educational achievement outcomes have been presented for the groups as a whole and also stratified by gender.

b

Mann-Whitney U test.

c

Two-sample test ofproportions. IQR – Inter-quartile range.