Attention deficit hyperactivity disorder and gastrointestinal morbidity in a large cohort of young adults

Table 1 Sociodemographic characteristics of young adults with and without attention deficit hyperactivity disorder

		ADHD
		No	Yes
	Number of participants	355652	33380
Gender	Female	41.10%	43.30%
	Male	58.90%	56.70%
Socioeconomic status	Low	26.30%	14.70%
	Medium	53.30%	50.30%
	High	20.40%	35.00%
Education	12	94.20%	93.20%
	< 12	0.30%	0.10%
	> 12	5.50%	6.70%
Comorbidities	None or mild	68.10%	63.20%
	Mild to moderate	9.20%	9.80%
	Moderate to severe	22.60%	27.00%
Country of origin	Western countries	21.80%	25.30%
	Africa	23.00%	21.70%
	Asia	20.40%	25.50%
	Former Soviet Union	20.00%	13.00%
	Ethiopia	3.50%	1.10%
	Other	0.50%	0.60%
	Israel	10.80%	12.70%
BMI, mean ± SD	Males	21.93 ± 0.02	22.42 ± 0.06
	Females	21.52 ± 0.02	21.88 ± 0.07
Height in cm, mean ± SD	Males	174.2 ± 0.03	174.4 ± 0.10
	Females	162.2 ± 0.03	162.2 ± 0.10

ADHD: Attention deficit hyperactivity disorder; BMI: Body mass index.