Table 4.

Secondary outcome measures

	Difference or odds ratio (95% confidence interval)	P value
Therapy outcome measures*:
Impairment	0.1 (−0.2 to 0.5)	0.44
Disability	0.1 (−0.2 to 0.4)	0.56
Handicap	−0.1 (−0.4 to 0.2)	0.67
Wellbeing	0.04 (−0.2 to 0.3)	0.75
Attention level*	0.02 (−0.3 to 0.3)	0.91
Play level*	0.04 (−0.2 to 0.2)	0.70
Vineland socialisation skills†	0.6 (−3.1 to 4.2)	0.76
Improvement by 12 months on auditory comprehension‡	1.4 (0.71 to 2.6)	0.35
Improvement by 12 months on expressive language‡	1.1 (0.61 to 2.2)	0.68
Improvement by 12 months on phonology‡	2.7 (1.2 to 6.3)	0.015
Reassessment of eligibility at 12 months‡	2.1 (1.0 to 4.2)	0.036

^*Difference in means obtained from repeated measures analysis of covariance with adjustment for baseline assessment of the outcome measure, with the difference for the therapy group minus that for watchful waiting averaged across the two follow up times. 

^†Difference in means obtained from analysis of covariance for 12 month scores adjusted for baseline assessment of the outcome measure. 

^‡Odds ratios obtained from logistic regression.