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Table 3 Medical health problems (chronic illness, general health problems and daily medication) in extremely preterm (EPT), very preterm (VPT), and full term-born adolescents at 12–14 and 17–19 years of age. Chi-square test. Further, participants with experience of orthodontic treatment and claimed orthodontic treatment need in extremely preterm (EPT), very preterm (VPT) and full term-born adolescents at 17–19 years of age

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

  12–14 years of age 17–19 years of age
EPT VPT Full term p value EPT VPT Full term p value
N = 25 N = 73 N = 93   N = 25 N = 73 N = 93  
Chronic illness 5 (20%) 5 (7%) 4 (4%) 0.027* 9 (36%) 10 (14%) 12 (13%) 0.017**
General health problems 7 (28%) 20 (27%) 18 (19%) 0.426 7 (28%) 21 (29%) 20 (22%) 0.571
Daily medication 4 (16%) 7 (10%) 7 (8%) 0.418 6 (24%) 13 (18%) 10 (11%) 0.192
Experience of orthodontic treatment      9 (36%) 28 (38%) 26 (28%)  
Fixed appliances      6 (67%) 15 (56%) 15 (58%)  
Removable appliances      1 (11%) 5 (19%) 7 (27%)  
Both fixed and removable appliances      2 (22%) 7 (26%) 2 (8%)  
Missing value       1 (1.5%) 2 (8%)  
Good satisfaction with orthodontic treatment (rating ≥ 70 on the VAS scale)      7 (78%) 21 (75%) 22 (85%)  
No experience of orthodontic treatment, but the participant wants to have treatment      4 (16%) 7 (10%) 18 (19%)  
Marked comments of why there is need for orthodontic treatment         
Rotated teeth      0 (0%) 4 (57%) 7 (39%)  
Spacing      0 (0%) 1 (14%) 5 (28%)  
Crowded teeth      1 (25%) 0 (0%) 2 (11%)  
To optimise tooth-brushing      0 (0%) 0 (0%) 1 (6%)  
Several reasons, e.g., overjet, crowded teeth, specific esthetic reasons      3 (75%) 2 (29%) 1 (6%)  
Missing value        2 (11%)  
  1. *Comparison EPT with VPT p = 0.351, EPT with Full term p = 0.060 and VPT with Full term p = 1.000—Bonferroni-test
  2. **Comparison EPT with VPT p = 0.063, EPT with Full term p = 0.033 and VPT with Full term p = 1.000—Bonferroni-test