ADescription of study population: positive if described in what (occupational) setting the participants were recruited+/−/?
(ie, insurance board, companies, population)
BPositive if total number of drop-outs/loss to follow-up <20% at the last moment of follow-up+/−/?
CInformation (completers) versus those lost to follow-up/drop-outs: positive if demographic/clinical information (participant+/−/?
characteristics such as age, sex and other potential factors) was presented for (completers) and those lost to follow-up/drop-outs
at the main moment of outcome measurement, or no drop-outs/loss to follow-up
DDescription of main outcome measure (sickness absence)+/−/?
EDescription of the instruments used to assess the risk factors+/−/?
Standardised assessment of patient characteristics and potential risk factor(s) including physical/environmental, mental,
work-related, psychosocial and individual factors
FFrequencies of all risk factors: positive if frequency, percentage or mean, median (interquartile range) and standard deviation/+/−/?
CI are reported for all factors
GAnalyses: positive if univariate crude estimates are reported. Positive if hazard ratios, odds ratios, relative risks or+/−/?
relative risk ratios are presented. Negative if correlations are reported
  • +, Positive; −, negative; ?, not clear.