With this review, we aimed to shed light on the effectiveness
of stage-based lifestyle interventions in primary
care. The current popularity of this kind of intervention
is confirmed by the fact that only 11 of the 29
included studies were published before the year 1999,
with the first studies published in 1994. With this, the
frequently mentioned empirical evidence on the effectiveness
of interventions based on stages of change
seems to be building up.5,47 However, the results of this
review raise questions about the evidence for the effectiveness
of these interventions.