Table 2.

Clustering of lifestyle risk behaviours among school-going adolescents in Peninsular Malaysia by gender, MyAHRB 2013

Number of risk factors	Smoking	Alcohol use	Physically inactive	Sedentary behaviour	Low fruit/vegetable intake	Boys			Girls
						O (%)	E (%)	O/E	O (%)	E (%)	O/E
0	–	–	–	–	–	2.31	1.77	1.30	1.66	1.19	1.40
1	+	–	–	–	–	0.99	0.68	1.45	0.00	0.03	0.00
	–	+	–	–	–	0.16	0.12	1.32	0.15	0.04	3.45
	–	–	+	–	–	7.25	7.53	0.96	10.95	10.39	1.05
	–	–	–	+	–	2.22	2.08	1.07	1.96	1.63	1.20
	–	–	–	–	+	4.12	4.13	1.00	1.96	2.88	0.68
2	+	+	–	–	–	0.08	0.05	1.72	0.00	0.00	–
	+	–	+	–	–	3.21	2.89	1.11	0.23	0.27	0.83
	+	–	–	+	–	1.15	0.80	1.44	0.00	0.04	0.00
	+	–	–	–	+	1.57	1.59	0.99	0.00	0.08	0.00
	–	+	+	–	–	0.49	0.53	0.93	0.15	0.38	0.40
	–	+	–	+	–	0.16	0.15	1.12	0.15	0.06	2.51
	–	+	–	–	+	0.08	0.29	0.28	0.15	0.11	1.43
	–	–	+	+	–	7.33	8.85	0.83	12.99	14.26	0.91
	–	–	+	–	+	18.04	17.58	1.03	25.76	25.15	1.02
	–	–	–	+	+	3.62	4.86	0.75	3.85	3.95	0.97
3	+	+	+	–	–	0.08	0.20	0.40	0.08	0.01	7.50
	+	+	–	+	–	0.25	0.06	4.38	0.00	0.00	–
	+	+	–	–	+	0.00	0.11	0.00	0.00	0.00	–
	+	–	+	+	–	3.21	3.40	0.94	0.45	0.38	1.21
	+	–	+	–	+	6.01	6.76	0.89	0.38	0.66	0.57
	+	–	–	+	+	1.65	1.87	0.88	0.15	0.10	1.45
	–	+	+	+	–	0.82	0.62	1.32	0.30	0.52	0.58
	–	+	+	–	+	0.91	1.24	0.73	0.60	0.93	0.65
	–	–	+	+	+	23.15	20.67	1.12	35.50	34.52	1.03
	–	+	–	+	+	0.33	0.34	0.96	0.23	0.15	1.56
4	+	+	+	+	–	0.25	0.24	1.03	0.15	0.01	10.92
	–	+	+	+	+	1.24	1.46	0.85	1.06	1.27	0.83
	+	–	+	+	+	7.58	7.94	0.95	0.60	0.91	0.66
	+	+	–	+	+	0.33	0.13	2.50	0.00	0.00	–
	+	+	+	–	+	0.66	0.48	1.38	0.08	0.02	3.10
5	+	+	+	+	+	0.74	0.56	1.32	0.45	0.03	13.53

Values in boldface indicate presence of clustering effect