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Table 2 DMFT, Care index (CI) and Restorative index (RI) in CLD and CNLD (n = 25 studies; 20 studies with DMFT data and 16 with standard deviations reported). Studies where DMFT data couldn’t be used are shown in learning disability subgroup tables, with reasons why, but are not included in calculations data couldn’t be used are shown, with reasons why, but are not included in calculations. All data were calculated from the primary data reported in Additional file 1: Appendix 2

From: Dental caries experience, care index and restorative index in children with learning disabilities and children without learning disabilities; a systematic review and meta-analysis

All learning disability groups (n = 20 studies with DMFT data and 16 with SD data)
Study Number of participants Ages DMFT data
CLD CNLD CLD DMFT (sd) CNLD DMFT (sd) CLD CIa CNLD CIa CLD RIb CNLD RIb
Total for all 3 Groups 1819 2157 1–18       
Mean (sd) 72.76 (±47.31) 86.28 (±64.56)   2.31 (±1.97) 2.51 (±2.14) 0.12 (±0.12) 0.18 (±0.27) 0.15 (±0.14) 0.28 (±0.33)
  1. abased on 8 studies
  2. bbased on 9 studies