Prevalence and Predictors of Obesity among 7- to 17-Year-Old Schoolchildren in Urban Arusha, Tanzania

Table 5

Prevalence of overweight and obesity by children sociodemographic characteristics based on univariate logistic regression.

Variables	Overall		Normal		Obese		Overweight		Underweight		value	OR and 95% CI
	n	%	n	%	n	%	n	%	n	%
Child sex
Girls	260	100	164	63.1	38	14.6	19	7.3	39	15	0.021	2.06, 1.11–3.82
Boys	191	100	133	69.6	19	9.9	4	2	35	18.3
Age groups
Below age 10	39	100	30	76.9	5	12.8	3	7.7	1	2.6	0.635	0.82, 0.36–1.85
Above age 10	412	100	267	64.8	52	12.6	20	4.9	73	17.7
Activeness
Involved in sports >4 days/week	14	100	9	64.3	1	7.1	2	14.3	2	14.3	0.912	1.09, 0.22–5.18
Involved in sports 2–4 days/week	125	100	81	64.8	15	12	5	4	24	19.2	0.599	0.76, 0.27–2.10
Involved in sports <2 days/week	166	100	106	63.8	26	15.7	7	4.2	27	16.3	0.987	0.99, 0.37–2.62
Did not involve in any sports	30	100	18	60	4	13.3	2	6.7	6	20
Sleeping time
10:00 pm and 11:00 pm (late)	117	100	77	65.8	18	15.4	6	5.1	16	13.7	0.067	1.81, 0.95–3.47
8:00 pm and 10:00 pm (Normal)	169	100	113	66.9	16	9.5	5	2.9	35	20.7
8:00 pm and 12:00 pm (random)	45	100	21	46.7	12	26.7	4	8.8	8	17.8	0.000	3.88, 1.80–8.35
11:00 pm and 12:00 pm (too late)	4	100	3	75	0	0	1	25	0	0	0.468	2.34, 0.11–19.32
Wake-up timing
5:00 am and 6:00 am (early)	263	100	167	63.5	36	13.7	14	5.3	46	17.5
6:00 am to 7:00 am (late early)	4	100	3	75	0	0	0	0	1	25	0.985	0.04, 0.13–1.18
7:00 am and 8:00 am (late)	42	100	30	71.4	4	9.5	1	2.4	7	16.7	0.144	0.00, 0.00–1.22
5:00 am to 8:00 am (randomly)	26	100	14	53.8	7	26.9	1	3.8	4	15.4	0.159	1.89, 0.77–4.60
Transport
On foot	236	100	149	63.1	30	12.7	12	5.1	45	19.1
By bus/motor bike	99	100	65	65.7	16	16.2	4	4	14	14.1	0.605	1.16, 0.64–2.11
Sedentary
Spent >3 hrs in TV (high level)	53	100	35	66	6	11.3	2	3.8	10	18.9
Spent2-3 hrs in TV (moderate level)	116	100	71	7.1	18	15.5	6	5.1	21	18.1	0.573	1.28, 0.55–3.28
Spent <2 hrs in TV (low level)	118	100	80	67.8	16	13.6	6	5	16	13.6	0.391	1.46, 0.61–3.52
Did house chores, no TV (non)	48	100	28	58.3	6	12.5	2	4.2	12	25	0.829	1.12, 0.38–3.27

Reference groups. OR = odds ratio and CI = confidential intervals.