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Samples selected for Study II in order to compare observed intakes before and after alteration of dietary data collection routines.
| Number of subjects | Dietary interview | Time-points of baseline examinations | |||||||||
| Total | Men | Women | Number of interviewers | Season | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | |
| Sample I | 672 | 312 | 360 | Six | July, August and September | †† | |||||
| Sample II | 621 | 252 | 369 | Two | September | † | † | † | † | ||
