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Table 3 The comparison of age 15 and age 18

From: A cohort study of factors that influence oral health-related quality of life from age 12 to 18 in Hong Kong

 

15 years old

18 years old

 

Mean (SD)

Median (IQR)

Mean (SD)

Median (IQR)

p value

OHRQoL

2.47(1.129)

2.00(3)

2.31(1.186)

2.00(2)

0.129

IOTN (DHC)

1.71(0.830)

1.00(1)

1.68(0.825)

1.00(1)

0.295

IOTN (AC)

1.27(0.580)

1.00(0)

1.28(0.592)

1.00(0)

0.317

DAI

1.94(1.006)

2.00(2)

1.92(0.989)

2.00(1)

0.586

ICON

1.34(0.476)

1.00(1)

1.34(0.476)

1.00(1)

1.000

ICON complexity

2.07(1.026)

2.00(1)

2.09(1.042)

2.00(1)

0.513

PAR

2.26(0.793)

2.00(1)

2.26(0.799)

2.00(1)

1.000

  1. OHRQoL Oral Health-Related Quality of Life, IOTN Index of Orthodontic Treatment Need, DHC dental health component, AC aesthetic component, DAI dental aesthetic index, ICON Index of Complexity, Outcome and Need, PAR Peer Assessment Rating, SD standard deviation, IQR interquartile range
  2. Sample size: 204; two-related-samples test: Wilcoxon Signed Ranks Test. OHRQoL were classified into quartiles; IOTN (DHC) and IOTN (AC): no need, borderline need, definite need; DAI: normal or minor malocclusion, definite malocclusion, severe malocclusion, very severe (handicapping) malocclusion; ICON: no, yes; ICON complexity: easy, mild, moderate, difficult, very difficult; PAR: almost ideal occlusion, acceptable occlusion, malocclusion