Figure 2. Caries incidence at last follow-up examination by intended treatment group and number of active fluoride varnish applications (n = 280). * 3 active applications + one child with 4 active applications. Intended groups are the groups randomized to receive 0, 2, or 4 fluoride varnish applications. Active groups are the children stratified by number of actual fluoride-containing varnish applications received (see text and APPENDIX).