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. 2011 Jul;72(4):592–601. doi: 10.15288/jsad.2011.72.592

Table 2.

Classification of adolescents' readiness according to the staging algorithm at the initial, 6-month, and 12-month assessments

Stage Initial (N= 174) % 6 month (n = 148) % 12 month (n = 147) %
Precontemplation 3.5 16.2 18.4
Contemplation 4.0 8.8 6.1
Preparation 69.4 25.7 22.4
Action 19.1 20.3 17.0
Maintenance 4.0 29.1 36.1

Note: ns vary because of missing data or loss to follow-ups (for 6-month and 12-month assessments).