. Author manuscript; available in PMC: 2016 Aug 25.

Published in final edited form as: Res Dev Disabil. 2014 Mar 27;35(7):1789–1801. doi: 10.1016/j.ridd.2014.02.003

Table 2.

Differential Abilities Scales – General Cognitive Ability Score, by birth hospital.

	Public hospital (n = 198)	Private hospital (n = 253)
Differential Abilities Scales
General cognitive score
Mean (SD)	75.7 (13.0)	98.4 (15.1)^*
Median	74	100
Range	52–113	62–136
N (%) scoring ≤70	77 (38.9)	11 (4.4)
N (%) scoring
50–60	23 (11.6)	0
61–70	54 (27.3)	11 (4.3)
71–80	61 (30.8)	24 (9.5)
81–90	34 (17.2)	40 (15.8)
91–100	19 (9.6)	53 (20.9)
101–110	4 (2.0)	64 (25.3)
111–120	3 (1.5)	47 (18.6)
121–130	0	12 (4.7)
121–140	0	2 (0.8)

p < 0.0001 by two sample t-test.