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Table 1 Frequency distribution of sociodemographic and clinical characteristics in a total sample (n = 906) and by ethnicity

From: Oral impacts on daily performances and its socio-demographic and clinical distribution: a cross-sectional study of adolescents living in Maasai population areas, Tanzania

Variable Total % (n) Maasai % (n) Non-Maasai % (n) *P-value
District of residence
 Monduli 52.9 (479) 58.0 (418) 33.0 (61)  
 Longido 47.1 (427) 42.0 (303) 67.0 (124) < 0.001
Sex
 Male 43.9 (398) 43.1 (311) 47.0 (87)  
 Female 56.1 (508) 56.9 (410) 53.0 (98) 0.341
Age
 12–14 years 87.3 (777) 86.5 (610) 90.3 (167)  
 15–17 years 12.7 (113) 13.5 (95) 9.7 (18) 0.173
Wealth index
 Poorest 48.8 (438) 57.3 (408) 16.2 (30)  
 Least poor 51.2 (459) 42.7 (304) 83.8 (155) < 0.001
Mother’s education
 Low (≤ primary school) 861 (95.0) 96.8 (698) 88.1 (163)  
 High (≥ secondary school) 45 (5.0) 3.2 (23) 11.9 (22) < 0.001
Oral hygiene status
 Poor 65.6 (594) 68.5 (508) 54.1 (100)  
 Good 34.4 (312) 31.5 (213) 45.9 (85) < 0.001
Gingival bleeding
 No 59.1 (535) 55.6 (401) 72.4 (134)  
 Yes 40.9 (371) 44.4 (320) 27.6 (51) < 0.001
DMFT
 DMFT = 0 91.2 (826) 92.6 (668) 85.4 (158)  
 DMFT > 0 8.8 (80) 7.4 (53) 14.6 (27) 0.002
Dental fluorosis
 TF score 0–4 51.4 (466) 47.9 (345) 65.4 (121)  
 TF score 5–9 48.6 (440) 52.1 (376) 34.6 (64) < 0.001
Dental erosion
 Grade 0 69.8 (632) 73.2 (528) 56.2 (104)  
 Grade > 0 30.2 (274) 26.8 (193) 43.8 (81) < 0.001
Tooth wear
 Grade 0 54.0 (489) 55.1 (397) 49.7 (92)  
 Grade > 0 46.0 (417) 44.9 (324) 50.3 (93) 0.194
TMD pain
 2Q/TMD = 0 88.2 (799) 88.8 (640) 85.9 (159)  
 2Q/TMD > 0 11.8 (107) 11.2 (81) 14.1 (26) 0.289
  1. *Pearson’s Chi-square test