. 2008 Aug 1;38(1):263–273. doi: 10.1093/ije/dyn147

Table 2.

Formal estimates of test–retest reliability for a number of exemplar lifestyle/environmental determinants that are widely studied

Reliability of measurement	Lifestyle/environmental factor
≥0.95	Body mass index (BMI) calculated from measured height and weight in various studies⁷⁶
∼0.9	Measured hip or waist circumference^76,77
∼0.7	Blood pressure measurement in the Intersalt Study⁷⁸
∼0.5	Many nutritional components in a dietary recall study, mean of four 24 h assessments⁷⁹
∼0.3	Many nutritional components in a dietary recall study, a single 24 h assessment⁷⁹