Table 3.

Sociodemographic and Clinical Factors Significantly Associated With ADHD-RS-IV Total Scores.

Binary variables	M	SD	M (SE) difference	95% CI	p value
Gender
Male, n = 81	41.77	7.91	2.45 (1.08)	[0.33, 4.57]	.023
Female, n = 152	44.22	7.77
Employment status
Working full/part-time, self-employed, n = 139	41.96	8.16	3.47 (1.01)	[1.44, 5.50]	.001
Not working, n = 94	45.44	7.01
Level of education
Completed school aged 18 years/university, n = 103	41.76	8.38	2.88 (1.03)	[0.86, 4.90]	.005
Other, n = 130	44.64	7.25
Nonpharmacological ADHD treatment currently received
No, n = 189	42.85	8.13	2.74 (1.31)	[0.16, 5.33]	.037
Yes, n = 44	45.59	6.33
Diagnosis by medical professional service type
Pediatric service/primary care clinic, n = 39	38.82	9.72	5.46 (1.34)	[2.82, 8.10]	< .001
Psychiatry/psychology service/other, n = 194				44.28	7.15
Categorical variables	Mean	SD			p value
Diagnosis by medical professional service type
Pediatric service, n = 14	38.07	8.61	vs. Adult psychiatry service p = .038		.004
Child psychiatry service, n = 59	44.34	7.57
Adult psychiatry service, n = 101	44.57	6.98
Primary care clinic, n = 25	39.24	10.44	vs. Adult psychiatry service p = .025
Psychology service, n = 17	42.24	8.26
Other, n = 17	44.35	5.66
Age of perceived symptom onset
0 to 7 years, n = 148	44.06	7.09			< .001
8 to 12 years, n = 56	43.64	7.47
13 to 17 years, n = 21	42.10	9.59
18 years and over, n = 8	31.88	11.74

Note. Owing to the number of tests performed and the descriptive aims of this research, nominal significance levels at p < .01 rather than p < .05 are considered most reliable. No significant associations were found between ADHD-RS-IV total scores and age category, number of medical comorbidities, currently taking medication for ADHD (vs. not), or age at first or second ADHD diagnosis. ADHD-RS-IV = ADHD Rating Scale-IV; CI = confidence interval.