Table 1

Frequency distribution of independent and dependent variables and their categories in Kinondoni and Temeke districts

Variables
Categories (code)
Kinondoni % (n)
Temeke %(n)
p-value

Sex e
Male (1)
41.1 (412)
36.8 (220)
P = 0.050

Female (2)
58.9 (591)
63.2 (378)

Age
12 Yr (1)
26.1 (262)
23.9 (143)
P = 0.033

13 yr (2)
41.0 (420)
48.5 (290)


14 yr (3)
32.0 (321)
27.6 (165)

Parental education
Both low (1)
38.5 (210)
53.8 (149)
P = 0.000

One low/one high (2)
24.2 (132)
20.9 (58)


Both high (3)
37.2 (203)
25.3 (70)

Place of residence:
Urban (1)
63.5 (637)
82.3 (492)
P = 0.000

Rural (2)
36.5 (366)
17.7 (106)

State of health
Good (0)
93.2 (935)
96.5 (577)
P = 0.003

Bad (1)
6.8 (68)
3.5 (21)

Reported problems tooth position
Yes (1)
10.5 (105)
13.9 (83)
P = 0.025

No (2)
89.5 (898)
86.1 (515)

Reported problems tooth spaces
Yes (1)
7.8 (78)
7.5 (45)
P = 0.465

No (2)
92.2 (925)
92.5 (553)

Problem swallowing
No (0)
93.5 (938)
90.8 (543)
P = 0.030

Yes (1)
6.5 (65)
9.2 (55)

Problem pain
No (0)
81.3 (815)
75.9 (454)
P = 0.066

Yes (1)
18.7 (188)
24.1 (144)

OHIS debris score
Good = 0
68.0 (682)
61.9 (370)
P = 0.007

Fair/poor = 1
32.0 (321)
38.1 (228)

OIDP extent
None = 0
81.5 (817)
54.5 (326)
P = 0.001

> 1 = 1
18.5 (186)
45.5 (272)

Malocclusion index (SMO)
No (0)
37.4 (328)
34.0 (163)
P = 0.237

Yes (1)
62.6 (549)
66.0 (316)

Dissatisfied appearance/function
Yes (0)
25.6 (257)
19.4 (116)
P = 0.002

No (1)
74.4 (746)
80.6 (482)

Reported state of teeth
Good (1)
84.8 (851)
91.6 (548)
P = 0.001

Bad (2)
15.2 (152)
8.4 (50)


Mtaya et al. BMC Oral Health 2008 8:14   doi:10.1186/1472-6831-8-14