Serum ferritin levels in children with attention deficit hyperactivity disorder and tic disorder

Table 2 Description of the average distribution of age and serum ferritin level

Grouping	Mini	Max	Mean	SD	Skewness	Kurtosis	95%CI lower	95%CI upper
HC age	5.00	12.00	8.57	2.28	-0.03	-1.26	8.47	8.67
HC SF	1.30	200.00	71.66	51.99	0.76	-0.51	69.38	50.63
ADHD age	5.00	12.00	7.92	1.85	0.47	-0.65	7.83	8.01
ADHD SF	2.60	148.60	36.63	20.32	1.53	3.42	35.62	37.64
TD age	5.00	12.00	7.61	2.03	0.49	-0.76	7.52	7.71
TD SF	2.90	262.70	35.43	20.64	2.66	15.31	34.45	36.41
ASD age	1	14.00	6.14	2.88	0.47	0.35	5.55	6.73
ASD SF	4.7	89.6	30.98	18.11	1.25	1.41	27.26	34.71

HC: Healthy control; ADHD: Attention deficit hyperactivity disorder; TD: Tic disorder; ASD: Autism spectrum disorders; SF: Serum ferritin.