Low performing index (LoP) within female groups

Periodontal status ND vs. OAD OAD 0.2
  ND vs. INS INS 1.0
  OAD vs. INS INS 0.2
Oral hygiene ND vs. OAD OAD 0.4
  ND vs. INS INS 0.4
  OAD vs. INS no difference