Table 2 Number of workers participating in different cross-sections for each group at baseline, and every 3 months during both the intervention (I) and a 1-year post-intervention (PI) follow-up
TimeIntervention groupControl groupTotal
nnn
Baseline263241504
I3241228469
I6216196412
I9105124229
I12159136295
Post intervention (PIA*)232220452
PI3142116258
PI6209176385
PI9110122232
PI12216206422
  • *Due to summer holidays at schools, at least one questionnaire was skipped in each kitchen series. Five series finished the intervention at 9 months (I9, nā€Š=ā€Š157) and 11 series at 12 months (I12). The post-intervention assessment (PIA) was thus made either at 9 or 12 months after the start of the implementation phase of the intervention (combined nā€Š=ā€Š452).