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Chapter 8154Table 5: OHIP score per question: at least 1 year after surgery compared to baseline. Question in Table 1Problem Mean T0(SD)Mean T10(SD)Mean difference (SD)P-value1 Pronunciation 1.1 (1.1) 0.6 (0.8) 0.7 (1.0) .0012 Reduced taste 0.4 (0.7) 0.1 (0.3) 0.3 (0.9) .0153 Painful aching 1.3 (1.3) 1.0 (1.0) 0.6 (1.4) .0264 Discomfort in eating 1.5 (1.4) 0.7 (1.0) 0.5 (1.7) .0005 Self-consciousness 1.8 (1.2) 0.9 (1.1) 1.3 (1.4) .0006 Feeling tense 1.5 (1.1) 0.7 (1.0) 1.0 (1.2) .0007 Unsatisfactory diet 0,9 (1.1) 0.4 (0.9) 0.3 (1.9) .0018 Interruption of meals 0,6 (0,9) 0.3 (0.6) 0.3 (1.0) .0129 Difficulty relaxing 1.0 (1.2) 0.7 (0.9) 1.9 (1.2) .01310 Embarrassment 2.0 (1.2) 0.5 (1.1) 1.8 (1.4) .00011 Irritability 0,7 (0,9) 0.4 (0.7) 1.3 (1.2) .00212 Difficulty with normal tasks0.7 (1.0) 0.3 (0.7) 0.6 (1.1) .00013 Life less satisfying 1.2 (1.1) 0.5 (0.7) 1.0 (1.1) .00014 Totally unable to function 0.4 (0.7) 0.2 (0.5) 0.2 (0.1) .091SD: standard deviationSignificance at P< .05 Table 6: OHIP scores and type of surgery over time (± SD).Le Fort I osteotomy BSSO BIMAX Osteotomy with genioplastyP-value N Baseline (T0) 14.5 ± 8.6 17.7 ± 11.8 18. 8 ± 12.4 8.7 ± 6.0 .073 764 weeks (T8) 20.1 ± 11.7 21.4 ± 11. 8 26.1 ± 14.1 20.9 ± 12.4 .612 596 months (T9) 9.1 ± 7.0 11.6 ± 8.7 8.9 ± 8.6 7.3 ± 7.1 .612 461 year (T10) 6.5 ± 7.7 8.6 ± 10.6 8.1 ± 8.0 7.2 ± 7.8 .941 40SD: standard deviation; N, numbers of patientsSignificance at P < .05Table 7: OHIP scores and indication for surgery over time (± SD).Class II Class III P-value NBaseline (T0) 14.2 ± 10.3 17.6 ± 10.3 .161 764 weeks (T8) 23.5 ± 13.0 19.9 ± 11.5 .388 596 months (T9) 9.2 ± 7.5 9.1 ± 8.6 .905 461 year (T10) 7.0 ± 7.8 7.7 ± 7.9 .766 40SD: standard deviation, significance at P < .05; N, number of patients