Table 2.

Effectiveness of the therapy.

Characteristics	OR (IC 95%)	p
Centers
Clinical staff professionals over the median: No versus Yes	1.00 (0.90–1.12)	0.9628
Hours/year/patient of work over the median: No versus Yes	1.13 (0.63–2.03)	0.6824
Median time from the request to diagnosis (months)	1.00 (1.00–1.00)	0.0002*
Patients
Age at diagnosis	0.98 (0.96–1.01)	0.1501
Sex: Male versus Female	0.88 (0.74–1.05)	0.1539
Only child: Yes versus No	1.09 (0.95–1.24)	0.2155
Born abroad: Yes versus No	0.53 (0.39–0.71)	< 0.0001*
Adopted child: Yes versus No	0.66 (0.47–0.93)	0.0173*
School failures: Yes versus No	0.66 (0.48–0.90)	0.0083*
Employed parents: Yes versus No	0.79 (0.70–0.90)	0.0002*
Family history of ADHD: Yes versus No	1.09 (0.94–1.28)	0.2500
Dystocic delivery: Yes versus No	0.97 (0.84–1.12)	0.6829
Preterm/low weight: Yes versus No	0.81 (0.68–0.98)	0.0261*
Exclusive breastfeeding (≥ 3 months): Yes versus No	1.13 (0.99–1.28)	0.0658
Motor delay: Yes versus No	2.45 (1.84–3.28)	< 0.0001*
Language delay Yes versus No	0.54 (0.47–0.62)	< 0.0001*
ADHD type H/I versus C	1.05 (0.93–1.20)	0.4158
CGI-S score at diagnosis 5–7 versus 3–4	0.95 (0.82–1.09)0.95 (0.83–1.10)	0.5116
Comorbidities
Psychiatric comorbidities: Yes versus No	1.04 (0.87–1.24)	0.6619
Chronic diseases: Yes versus No	0.90 (0.69–1.17)	0.4356
Therapy versus None
Combined	4.61 (3.87–5.49)	< 0.0001*
Methylphenidate alone	2.70 (2.27–3.21)	< 0.0001*
Psychological alone	2.05 (1.75–2.41)	< 0.0001*

Generalized linear mixed model with center as the random effect, adjusted for patient conditions at diagnosis.

and center characteristics, weighting by the inverse of the propensity of receiving the treatment.