Table 1.

Participants’ characteristics and CBIS scores; young Hong Kong Chinese children aged 6·1–12·9 years

	All (n 620)		Males (n 327)		Females (n 293)
	Mean or n	sd or %	Mean or n	sd or %	Mean or n	sd or %	P for sex differences
Age (years)	9·2	1·7	9·2	1·8	9·3	1·7	NS
Age categories
<8 years	179	28·9	98	30·0	30	30·0
8–10 years	209	33·7	117	35·8	36	36·0
>10 years	232	37·4	112	34·3	34	34·0	NS
Height (m)	1·3	0·1	1·3	0·1	1·3	0·1	NS
Weight (kg)	32·2	10·2	32·7	10·7	31·7	9·6	NS
BMI (kg/m2)	17·7	3·3	18·1	3·5	17·3	3·0	<0·01
IOTF categories
Underweight	57	9·2	22	6·7	35	11·9
Normal weight	419	67·6	212	64·8	207	70·6
Overweight	108	17·4	67	20·5	41	14·0
Obese	36	5·8	26	8·0	10	3·4	<0·01
Actual CBIS category
1	50	8·1	37	11·3	13	4·4
2	111	17·9	51	15·6	60	20·4
3	137	22·1	60	18·3	77	26·3
4	109	17·6	71	21·7	38	13·0
5	139	22·4	89	27·2	50	17·1
6	63	10·2	14	4·3	49	16·7
7	11	1·8	5	1·5	6	2·0	<0·001
Perceived CBIS category
1	97	15·6	58	17·7	39	13·3
2	147	23·7	71	21·7	76	25·9
3	184	29·7	111	33·9	73	24·9
4	114	18·4	54	16·5	60	20·5
5	56	9·0	25	7·6	31	20·5
6	16	2·6	6	1·8	10	3·4
7	6	1·0	2	0·6	4	1·4	0·05
Ideal CBIS category
1	126	20·3	73	22·3	53	18·1
2	175	28·2	98	30·0	77	26·3
3	230	37·1	111	33·9	119	40·6
4	77	12·4	36	11·0	41	14·0
5	8	1·3	6	1·8	2	1·0
6	0	0·0	0	0·0	0	0·0
7	4	0·6	3	0·9	1	0·3	NS

CBIS, Child’s Body Image Scale; IOTF, International Obesity Task Force.

Values are presented as mean and standard deviation for continuous variables or as number and percentage for categorical variables.