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Table 4 Comparison of oral health-related quality of life (OHIP-14) within the three study groups (extremely preterm (EPT), very preterm (VPT) and full term-born adolescents). The groups compared are individuals with and without chronic illness at 12–14 and 17–19 of age, and TDM pain or not according to two screening questions at 17–19 years of age. Further, comparisons regarding subjective orthodontic treatment need or not at 17–19 years of age. ANOVA test

From: Do preterm-born adolescents have a poorer oral health-related quality of life?

  OHIP-14 – EPT OHIP-14 – VPT OHIP-14 – Full term
N = 25 N = 73 N = 93
Mean score ± SD Mean score ± SD Mean score ± SD
Chronic illness 12–14 years Yes (N = 5) 3.20 ± 3.11 Yes (N = 5) 6.20 ± 5.22 Yes (N = 4) 0.50 ± 1.00
  No (N = 20) 1.85 ± 2.76 No (N = 68) 2.03 ± 3.48 No (N = 89) 2.10 ± 3.00
p value 0.349 0.015 0.292
Chronic illness 17–19 years Yes (N = 9) 2.56 ± 4.77 Yes (N = 10) 5.80 ± 8.88 Yes (N = 12) 1.58 ± 1.44
  No (N = 16) 2.94 ± 3.11 No (N = 63) 2.75 ± 4.22 No (N = 81) 3.32 ± 5.17
p value 0.810 0.080 0.017
TMD pain1 17–19 years Yes (N = 6) 4.33 ± 5.72 Yes (N = 9) 9.89 ± 10.11 Yes (N = 21) 4.86 ± 8.06
  No (N = 19) 2.32 ± 2.85 No (N = 64) 2.22 ± 3.11 No (N = 72) 2.58 ± 3.37
p value 0.438 0.053 0.221
TMD pain2 17–19 years Yes (N = 2) 0.00 ± 0.00 Yes (N = 6) 15.00 ± 9.859 Yes (N = 10) 9.40 ± 10.44
  No (N = 23) 3.04 ± 3.76 No (N = 67) 2.10 ± 2.73 No (N = 83) 2.34 ± 3.06
p value 0.273 0.024 0.062
Subjective orthodontic treatment need 17–19 years Yes (N = 4) 6.75 ± 5.50 Yes (N = 7) 6.14 ± 10.75 Yes (N = 18) 4.06 ± 4.45
  No (N = 12) 0.92 ± 1.73 No (N = 38) 1.74 ± 3.06 No (N = 48) 2.27 ± 4.05
p value 0.011 0.031 0.215
  1. TMD pain1 – Do you have pain in the temple, face, temporomandibular joint or jaw once a week or more? TMD pain2 – Do you have pain when you open your mouth wide or chew once a week or more often