Comparison of Oral Health Impact Profile index and Oral Index of Daily Performance as predictors of quality of life of patients with orofacial pain

Introduction. Oral health-related quality of life
instruments were developed
separately to assess quality
of life with added advantage of patient feedback. Aim
of the study. To determine the reliability of OHIP and
OIDP as predictors of quality of life (QoL) of patients
with orofacial pain (OFP). Methods. Survey of QoL
of patients at a dental clinic. A 14-item OHIP and 10-
item OIDP questionnaires were submitted to patients
seen during the study period. The questionnaires also
included pain diagnosis and measurement of pain using
the Visual Analogue Scale. The data were analyzed
using SPSS version 20. Reliability of instruments was
tested with Cronbach’s alpha. (P value was at ≤0.05).
Results. Two hundred and ninety-five respondents
participated. Mean age was 39.8±18.1 years, mean
VAS 5.5 ± 2.9, the prevalence, extent and mean severity
score of OHIP-14 were 64.7%, 2.8±3.6 and 17.8±12.6,
respectively. The OIDP surface count (SC) and
OIDP Additive (ADD) were 70.2% and 16.98±21.93,
respectively. VAS, OHIP and OIDP showed low,
positive but significant correlation. Cronbach’s alpha
reliability indices for OHIP and OIDP were 0.93 and
0.94, respectively. Both instruments showed significant
impact of OFP on eating, (OHIP p= 0.002, OIDP p=0.003), sleeping (OIDP, p =0.004), and diet (OHIP,
p= 0.014). Conclusion. Both instruments showed high
reliability and validity indices in assessing impact of
FP on the quality of life among affected individuals.