Association between body mass index and tic disorders in school-age children

BMC Pediatrics

Table 1 Comparison of the YGTSS score grades for general data of different patients

items	mild(n = 30)	moderate(n = 31)	severe(n = 25)	F/χ²/Z	P
age	6.98 ± 2.25	8.14 ± 2.07	8.50 ± 2.12	4.139	0.012
primary site of TD			25	0.460	0.795
facial	18	21	15
non-facial	12	10	10
BMI	19.95 ± 4.75	24.96 ± 4.38	24.55 ± 6.43	10.724	< 0.001
sex(M/F)	13/17	15/16	9/16	0.868	0.648
course of disease	4.56 ± 5.87	5.64 ± 3.70	6.10 ± 4.78	2.469	0.091
residence				6.987	0.030
urban	15	19	21
rural	15	12	4
family monthly income(CNY)				0.142	0.931
< 3000	2	3	2
3000–5999	9	8	8
6000–8999	13	14	11
9000 -	6	5	4
duration of breastfeeding(months)	11.35 ± 4.14	12.87 ± 3.14	13.65 ± 4.57	0.560	0.715
average night snack frequency	30			4.820	0.090
once every 1–2 days	7	11	10
once every 2–3 days	8	11	10
once every 4 days or less	15	9	5
Western fast-food frequency				3.783	0.151
once every 1–2 days	5	7	9
once every 2–3 days	7	8	7
once every 4 days or less	18	16	9
snacking pattern				6.834	0.033
high-sugar and high-calorie	11	16	18
other	19	15	7
weekly physical exercise frequency				6.168	0.046
Once every 1–3 days	14	10	6
Once every 4–6 days	12	13	8
Once a week or less	4	7	11
weekly exercise time (h)				10.727	0.005
< 1	4	9	11
1 -	7	8	7
4 -	8	8	6
> 7	11	6	1
average daily time spent using electronic products(h)				0.053	0.974
< 1	2	1	1
1–3	11	12	10
> 3	17	18	14
daily sleep time (h)				3.453	0.178
< 8	4	7	11
8-	15	14	7
> 10	11	10	7
caesarean birth (n)		31		11.519	0.003
yes	4	13	14
no	26	18	11

ISSN: 1471-2431