A novel statistical method developed by study co-authors Tommi Härkänen, PhD, and Risto Kaikkonen, MSc, was used to predict adjusted average sickness absence days per working year.
• In Norway, mothers» absence due to sickness is reduced by about 5 — 10 % from an average level of 20 % in families where fathers take longer leave (Bratberg and Naz, 2009).