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Table 6 Known-groups validity of OHIP5-Ar

From: Translation and validation of the Arabic version of the 5-item Oral Health Impact Profile: OHIP5-Ar

  N Mean ± SD P
Missing teetha
≥20 teeth 266 1.18 ± 0.92 < 0.001
  < 20 teeth 54 2.15 ± 0.70
Location of missinga
 Anterior 82 1.87 ± 0.96 < 0.001
 Posterior 238 1.16 ± 0.89
Periodontal statusa
 Unhealthy 234 1.43 ± 0.96 0.006
 Healthy 86 1.11 ± 0.92
Agea
  ≤ 40 251 1.25 ± 0.94 < 0.001
  > 40 69 1.69 ± 0.93
Education levelb
 Illiterate 49 2.02 ± 0.89 < 0.001
 Primary 58 1.40 ± 0.95
 Preparatory 60 1.24 ± 0.98
 Secondary 75 1.18 ± 0.98
 University 72 1.13 ± 0.77
 Postgraduate 6 0.93 ± 0.78
  1. SD standard deviation, P value is significant at 0.05 level
  2. aMann-Whitney test; bKruskal-Wallis test