(Note that a ratio of over 90 % has been identified by bond rating agencies as being problematic for retaining our valued AAA - credit rating). (boardoftrade.com)
Reason # 1: The study asked people to recall their food intake using a questionnaire at the beginning of the study, which is problematic because dietary recall questionnaires are notoriously inaccurate. (masteringdiabetes.org)
As you can imagine, this is especially a concern in indoor pools without ventilation but can also be problematic in outdoor pools. (wellnessmama.com)