Original sentence: Substantiated cases of child sexual abuse in the UK have increased in the last few years
Edited sentence: Dennis Howitt (1995) disagrees with such research, explaining the weakness of correlational studies.He argues that "one cannot simply take evidence that offenders use and buy pornography as sufficient to implicate pornography causally in their offending.In contrast, the United Kingdom Children's charity NCH have stated that demand for child pornography on the Internet has led to an increase in sex abuse cases, though this conflicts with the Office for National Statistics's 2007 report on Child Protection Registers, which shows a decrease of approximately 27% in the number of sexually abused children between 2003 and 2007 on the register.Substantiated cases of child sexual abuse in the US declined dramatically in number between 1992 and (at least) 1998.. A substantial decline also appears to have occurred in Australia.The most reasonable assessment based on the available research literature is that the relationship between pornography, fantasy and offending is unclear