Open Access
Table IV
Prevalence of OP reported in the literature.
| Authors | Prevalence of OP |
|---|---|
| Smiljic S et al., (2016) [6] | 32% among the university students |
| Maulina et al., (2014) [8] | 55.9% in Indonesian community health centers |
| Oberoi SS et al., (2014) [9] | 42.7% in patients attending tertiary care hospitals in India |
| Chung et al., (2004) [10] | 42% in Korean elders |
| Allen et al., (1999) [11] | 41.6% |
| Locker and Grushka et al., (1987) [12] | 39.7% in the city of Toronto. |
| Riley et al., (2002) [13], | 17.4% in Americans |
| Macfarlane et al., (2001) [14] | 26% |
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