The impact of study design and diagnostic approach in a large multi-centre ADHD study: Part 2: Dimensional measures of psychopathology and intelligence

Müller, Ueli C; Asherson, Philip; Banaschewski, Tobias; Buitelaar, Jan K; Ebstein, Richard P; Eisenberg, Jaques; Gill, Michael; Manor, Iris; Miranda, Ana; Oades, Robert D; Roeyers, Herbert; Rothenberger, Aribert; Sergeant, Joseph A; Sonuga-Barke, Edmund JS; Thompson, Margaret; Faraone, Stephen V; Steinhausen, Hans-Christoph

doi:10.1186/1471-244X-11-55

Table 1 Conners' Questionnaires: Effects of age, centre, status, and gender

From: The impact of study design and diagnostic approach in a large multi-centre ADHD study: Part 2: Dimensional measures of psychopathology and intelligence

Parent ratings
	Age		Centre1°			Status°			Gender°			Centre × Status°			Centre × Gender°			Status × Gender°			Centre × Status × Gender°
	rho	p	Q	Crit	Sig	Q	Crit	Sig	Q	Crit	Sig	Q	Crit	Sig	Q	Crit	Sig	Q	Crit	Sig	Q	Crit	Sig
A	0.063	0.002	69.2	22.9	***	595.9	4.01	***	0.55	4.01		103	22.9	***	17.9	22.9		16.5	4.01	***	22.0	22.9
B	0.002	0.919	13.8	22.7		881.2	4.05	***	28.7	4.05	***	81.4	22.7	***	6.87	22.7		70.3	4.05	***	10.6	22.7
C	0.099	0.000	12.3	20.8		2001	3.94	***	1.71	3.94		69.0	20.8	***	8.43	20.8		53.1	3.94	***	14.3	20.8
D	0.076	0.001	16.8	25.0		82.1	4.05	***	3.84	4.05		42.5	25.0	**	8.42	25.0		14.6	4.05	***	11.8	25.0
E	-0.073	0.000	168.0	23.8	***	76.06	4.11	***	1.74	4.11		32.8	23.8	**	14.1	23.8		1.67	4.11		17.7	23.8
F	-0.002	0.938	31.4	24.7	*	371.3	4.03	***	6.41	4.03	*	43.0	24.7	**	24.0	24.7		15.6	4.03	***	26.6	24.7	*
G	0.020	0.312	21.6	24.7		69.78	4.03	***	8.75	4.03	**	12.4	24.7		14.2	24.7		6.22	4.03	*	6.69	24.7
H	0.053	0.008	32.3	20.7	**	1327	4.00	***	19.5	4.00	***	109	20.7	***	9.5	20.7		90.6	4.00	***	20.5	20.7
I	0.080	0.000	17.1	21.3		1343	3.99	***	4.94	3.99	*	95.3	21.3	***	3.08	21.3		59.0	3.99	***	7.79	21.3
J	0.125	0.000	65.7	23.4	***	299.7	4.11	***	0.44	4.11		79.4	23.4	***	15.7	23.4		12.9	4.11	**	18.5	23.4
K	0.099	0.000	17.8	21.8		1133	4.00	***	1.68	4.00		104	21.8	***	6.29	21.8		50.2	4.00	***	11.8	21.8
L	0.045	0.027	15.9	22.3		1057	3.98	***	27.8	3.98	***	108	22.3	***	6.95	22.3		78.0	3.98	***	15.3	22.3
M	0.072	0.000	14.8	21.1		1850	3.96	***	3.90	3.96		66.1	21.1	***	6.79	21.1		46.7	3.96	***	11.2	21.1
N	0.070	0.001	10.0	20.6		1823	3.95	***	17.5	3.95	***	101	20.6	***	8.14	20.6		84.9	3.95	***	16.9	20.6
*Mean* ^§	0.0628		36.2	22.6		922.1	4.0		9.1	4.0		74.7	22.6		10.7	22.6		42.9	4.0		15.1	22.6
Teacher ratings
	*Age*		*Centre* °			*Status* °			*Gender* °			*Centre × Status* °			*Centre × Gender* °			*Status × Gender* °			*Centre × Status × Gender* °
	*rho*	p	Q	*Crit*	*Sig*	Q	*Crit*	*Sig*	Q	*Crit*	*Sig*	Q	*Crit*	*Sig*	Q	*Crit*	*Sig*	Q	*Crit*	*Sig*	Q	*Crit*	*Sig*
A	0.060	0.004	85.5	25.1	***	159.7	4.22	***	0.68	4.22		19.5	25.1		8.28	25.1		4.90	4.22	*	11.2	25.1
B	0.122	0.000	55.2	23.8	***	235.1	3.97	***	9.94	3.97	**	12.1	23.8		16.3	23.8		18.4	3.97	***	10.5	23.8
C	0.114	0.000	32.9	22.1	**	560.0	3.96	***	33.7	3.96	***	10.4	22.1		19.8	22.1		29.8	3.96	***	18.5	22.1
D	0.151	0.000	30.3	26.1	*	43.42	4.27	***	1.06	4.27		4.6	26.1		5.82	26.1		1.64	4.27		9.6	26.1
E	-0.024	0.254	104	22.2	***	39.09	4.02	***	6.82	4.02	*	8.8	22.2		9.66	22.2		1.54	4.02		6.90	22.2
F	0.057	0.006	30.3	25.1	*	146.2	4.20	***	6.23	4.20	*	24.9	25.1		40.3	25.1	**	6.63	4.20	*	37.1	25.1	**
H	0.134	0.000	74.0	21.3	***	647.7	3.95	***	30.9	3.95	***	8.8	21.3		24.97	21.3	*	44.3	3.95	***	16.4	21.3
I	0.115	0.000	43.1	21.0	***	622.8	3.98	***	27.0	3.98	***	11.6	21.0		27.2	21.0	*	43.1	3.98	***	14.4	21.0
J	0.087	0.000	48.3	22.7	***	224.2	3.96	***	0.01	3.96		36.5	22.7	**	51.4	22.7	***	2.58	3.96		59.4	22.7	***
K	0.102	0.000	59.4	21.0	***	618.4	3.94	***	14.1	3.94	***	11.5	21.0		27.6	21.0	*	30.1	3.94	***	17.6	21.0
L	0.145	0.000	77.7	21.2	***	496.8	3.90	***	24.6	3.90	***	5.6	21.2		35.9	21.2	**	32.9	3.90	***	17.3	21.2
M	0.083	0.000	34.2	21.4	**	639.1	3.93	***	39.1	3.93	***	11.2	21.4		13.0	21.4		38.6	3.93	***	16.4	21.4
N	0.147	0.000	69.3	20.9	***	844.9	3.91	***	57.2	3.91	***	8.2	20.9		22.9	20.9	*	55.7	3.91	***	16.8	20.9
*Mean* ^§	0.0958		57.3	22.6		406.0	4.0		19.3	4.0		13.3	22.6		23.3	22.6		23.9	4.0		19.4	22.6

AOppositional
BCognitive Problems/Inattention
CHyperactivity
DAnxious-Shy
EPerfectionism
FSocial Problems
GPsychosomatic
HConners' ADHD-Index
IConners' Global Index: Restless-Impulsive
JConners' Global Index: Emotional Lability
KConners' Global Index: Total
LDSM-IV: Inattentive
MDSM-IV: Hyperactive-Impulsive
NDSM-IV: Total
° Three-way analysis; dependent scores are adjusted for age (residuals of linear regression)
§ In age: mean of absolute 'rho' values
Q Robust three-way test statistic for trimmed means (see methods section)
Crit Critical value (α = .05) for Q
Sig Two sided α-level
* p < 0.05
** p < .0.01
*** p < .0.001

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ISSN: 1471-244X

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