The degrees of seismic intensity were categorized from strongest to weakest using five phrases as follows: "violente secousse," "forte secousse," "secousse assez forte," "légère secousse," and "la secousse".
Subsequently, we also added the following potential confounding factors retrieved from the HUNT2 dataset: duration of education (≤ 9, 10 12 and ≥13 years) as proxy for socioeconomic status, daily smoking (yes/no), total HADS score (categorized from a continuous variable into three categories with score ≤ 16, 17 21 and ≥22) and CAGE score (0 or ≥1).
According to the CPG protocol, five grades were categorized from these measures: grade 0 (pain free, no pain in the prior six months); grade I (low disability, low intensity); grade II (low disability, high intensity); grade III (high disability, moderately limiting); and grade IV (high disability, severely limiting).
For LIS, each of the four components is categorized from 0 to 4, where a higher number is worse (Table 1).
For LIS, each of the four components is categorized from 0 to 4, where a higher number is worse (Table 1).
States are categorized from highest rate to lowest rate.
Participants learned to categorize figures from eight different "families" of alien-like creatures through trial-and-error responding with feedback (stimulus images courtesy of Michael J. Tarr, Center for the Neural Basis of Cognition and Department of Psychology, Carnegie Mellon University, http://www.tarrlab.org).
In this study, we first categorized ecological land from two dimensions, i.e. its ecological function and social property.
Except for education, categorized in four levels, all information retrieved from the interviews was categorized in two levels of categorical variables.
Despite the variation, job requirements can roughly be categorized into two groups from the perspective of "certifiability".
