I went back and looked at the data in the study to see whether it used the preliminary research or only for successfully recruited candidates and discovered this:

"Cohorts born before 1962 were subject to a different scoring norm, and cohorts born later than 1991 faced a radically different conscription process with less than 50% invited for in-person testing after completing a web-administered survey. As a result, representative data are not available for later birth cohorts. Data for immigrants are excluded as information on full family size and exact birth order is of lesser quality, while selection into scoring is markedly different as immigrants typically do not face mandatory conscription testing but need to self-select into conscription."

So it seems the preliminary examination does not include enough information or the conscription in general has changed to radically for that information to be reliable.

> Since 1985, women have been able to enlist for voluntary service as regular recruits.[citation needed] On 14 June 2013, the Norwegian Parliament voted to extend conscription to women.[15] In 2015 conscription was extended to women making Norway the first NATO member and first European country to make national service compulsory for both men and women.[16] There is a right of conscientious objection.[citation needed]

So at least since 2015, all men and women called in were apparently tested.