Eva Skovlund

Author information from the last article

Eva Skovlund er professor i medisinsk statistikk ved Institutt for samfunnsmedisin og sykepleie, NTNU og spesialrådgiver ved Statens legemiddelverk.

Articles by Eva Skovlund

Do we need all the decimals?

Stian Lydersen,
Eva Skovlund

05.05.2023: If we use too few decimal places, the result will be imprecisely reported. On the other hand, if we use too many decimals, we give the impression that the result is more precise than it really is. How many decimals to use should be a conscious choice. Using more decimals than necessary is not wrong...

Do not adjust for the baseline value in observational studies

Stian Lydersen,
Eva Skovlund

22.11.2021: In randomised trials with measurements at two or more time points, it is recommended to adjust for the baseline value, for example by using an analysis of covariance. In an observational study, such an analysis will lead to biased effect estimates and problems with interpretation. When we randomise...