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Table 1 Frequency distribution of independent and dependent variables and their categories in Kinondoni and Temeke districts

From: Malocclusion, psycho-social impacts and treatment need: A cross-sectional study of Tanzanian primary school-children

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)