Factor	Yes					No
	N	n	%	95% CI		N	n	%	95% CI
	N	n	%	Lower	Upper	N	n	%	Lower	Upper
Gender
Male	369799	3944	32.9	31.1	34.8	753336	8751	67.1	65.2	68.9
Female	321364	3473	28.7	27.1	30.5	796447	9244	71.3	69.5	72.9
Age
13 year old and below	111656	1232	23.5	21.5	25.5	364435	4150	76.5	74.5	78.5
14 years old	138069	1508	29.9	27.4	32.6	322957	3837	70.1	67.4	72.6
15 years old	135032	1545	29.8	27.2	32.5	318487	4003	70.2	67.5	72.8
16 years old	158791	1583	36.8	33.8	39.9	272798	2971	63.2	60.1	66.2
17 years old	149409	1564	35.4	32.5	38.5	272408	3050	64.6	61.5	67.5
Form
Lower secondary (1 - 3)	390129	4344	27.9	26.2	29.7	1006525	11986	72.1	70.3	73.8
Upper secondary (4 - 5)	301543	3075	35.8	33.5	38.1	541249	5993	64.2	61.9	66.5
Ethnicity
Malay	408725	4864	30.0	28.1	31.9	954806	12192	70.0	68.1	71.9
Chinese	143126	1339	31.6	27.6	35.9	309417	3157	68.4	64.1	72.4
Indian	52153	446	33.8	29.9	37.9	102053	999	66.2	62.1	70.1
Bumiputera Sabah	35283	310	31.9	25.7	38.8	75342	679	68.1	61.2	74.3
Bumiputera Sarawak	36104	296	29.6	26.0	33.3	85999	724	70.4	66.7	74.0
Others	16452	164	42.6	34.1	51.6	22159	244	57.4	48.4	65.9
Parents marital status^*
Married and living together	567985	6121	29.9	28.3	31.5	1331820	15495	70.1	68.5	71.7
Single parents	121988	1280	36.0	33.8	38.3	216666	2480	64.0	61.7	66.2
Parental/guardian supervision
Yes	442607	4645	34.7	32.9	36.6	832523	9399	65.3	63.4	67.1
No	248709	2763	25.8	24.3	27.4	714712	8556	74.2	72.6	75.7
Bullied^*
Yes	142735	1445	37.8	35.4	40.3	234558	2711	62.2	59.7	64.6
No	645869	6928	30.6	29.0	32.2	1466275	17019	69.4	67.8	71.0
Current alcohol drinking^*
Yes	83867	791	42.6	38.6	46.8	112942	1128	57.4	53.2	61.4
No	598260	6540	29.5	28.0	31.1	1428122	16780	70.5	68.9	72.0
Current smoker^*
Yes	128326	1309	50.0	47.8	52.3	128144	1386	50.0	47.7	52.2
No	559570	6063	28.3	26.7	29.9	1418525	16573	71.7	70.1	73.3
Current drug user
Yes	20700	199	61.8	53.6	69.4	12792	140	38.2	30.6	46.4
No	671485	7226	30.4	28.9	31.9	1538076	17867	69.6	68.1	71.1