Is incidence of cancer on the decline in Delhi, capital of India?

The incidence of cancer varies to a great extent in the resident population of Delhi (Urban area). The purpose of this study is to examine the time trends of incidence rates in different sites (ICD.9) of cancer. Average Annual Age-Adjusted (world population) incidence rates by site (ICD.9) is used to estimate the parameters by linear regression method. Time trends analysis of 8 years from 1988 to 1995 in Delhi for age-adjusted, truncated (35-64 years) incidence rates to world population and crude incidence rate by site (ICD.9) did not reveal statistically significant decrease or increase in the incidence.