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Table 3 Frequency distribution of participants in urban (Kinondoni) and rural (Kibaha/Bagamoyo) districts of Tanzania according to category on independent variables (n = 1031).

From: Psychometric properties and the prevalence, intensity and causes of oral impacts on daily performance (OIDP) in a population of older Tanzanians

   Urban Rural
Variables Categories (Code) % (n) % (n)
Age (years) 50–59 (1) 50.3 (257) 37.9 (197)
  60–69 (2) 28.8 (147) 30.0 (156)
  70+ (3) 20.9 (107) 32.1 (167)*
Gender Male (1) 42.7 (218) 50.0 (260)
  Female (2) 57.3 (293) 50.0 (260)*
Wealth index 1st quartile-least poor 45.4 (232) 4.4 (23)
  2nd quartile 40.1 (205) 8.8 (46)
  3rd quartile 11.2 (57) 35.0 (182)
  4th quartile – poorest 3.3 (17) 51.7 (269)*
Number of decayed teeth 0–1 (0) 54.0 (276) 44.6 (232)
  2–22 (1) 46.0 (235) 55.4 (288)*
Posterior occluding units, 10 POU (1) 12.1 (62) 22.7 (118)
  0–9 POU (2) 87.9 (449) 77.3 (402)*
Mobile teeth 0–1 (1) 83.8 (428) 77.3 (402)
  2–25 (2) 16.2 (83) 22.7 (118)*
Self-reported oral health status Good (1) 74.4 (380) 54.4 (283)
  Bad (2) 25.6 (131) 45.6 (237)*
Chewing ability All foods (1) 74.8 (382) 63.7 (331)
  Soft/mashed only (2) 25.2 (129) 36.3 (189)*
Number of missing teeth 0–10 (1) 83.2 (425) 82.2 (427)
  11–19 (2) 11.9 (61) 12.3 (64)
  20+ (3) 4.9 (25) 5.6 (29)
  1. * p ≤ 0.05.
  2. The total number in the different categories did not add up to 1031 owing to missing values.