The IFHS also argues that underreporting is likely to be common in household surveys, particularly due to household dissolution after the death of a household member. On this basis the authors used several demographic assessments such as the growth balance method to derive an adjustment for reporting bias. This adjustment raised the violence-related death rate by roughly 50%, from 1.09 (95% CI, 0.81 to 1.50) to 1.67 (95% uncertainty range 1.24 to 2.30).