Background: Visual analog scales (VAS) and numeric analog scales (NAS) are used to assess post-operative pain. but few studies indicate their usefulness in rural illiterate population in India. Aims: This study was designed to 1) Compare the impact of literacy on the ability to indicate pain rating on VAS and NAS in post-operative rural patients. 2) Assess the level of agreement betwe... https://megavitamines.shop/product-category/n-acetyl-d-glucosamine/