Table 4. Standardized^* Reading Scores, means (sd).

	Baseline			Post-Intervention			Change Scores
	Active	Placebo	P	Active	Placebo	P	Active	Placebo	P
All randomized (n = 362)	84.6 (6.6)	84.8 (6.1)	0.937	86.1 (7.0)	86.0 (7.5)	0.895	1.5 (4.4)	1.2 (4.3)	0.279
Reading ≤20th Centile (n = 224)	80.6 (5.3)	81.2 (4.8)	0.582	82.6 (6.0)	82.1 (6.1)	0.708	2.0 (4.2)	0.9 (3.9)	0.041
Reading ≤10th Centile (n = 105)	75.6 (4.0)	77.5 (3.9)	0.006	78.7 (5.5)	78.4 (5.8)	0.862	3.1 (4.4)	0.9 (4.2)	0.011

^*Standardized scores have a mean of 100, sd = 15.

Reading standard scores are derived from the British Ability Scales II.¹³