Table 2.

Comparison of rates of premature RTP and RTL for chart reviews completed during 2006 to 2011 and 2011 to 2016

VARIABLE	PREMATURE RTP, %	PREMATURE RTL, %	PREMATURE RTL AND RTP, %
A. 2011 to 2016 chart review	26.7	42.6	35.7
B. 2006 to 2011 chart review^{^*}	43.5	44.7	48.2
Absolute change (A-B), %	-16.8	-2.1	-12.5
Relative change ([A-B]/B), %	-38.6^{^†}	-4.7	-25.9

RTL—return to learn, RTP—return to play.
↵* Data from the 2006 to 2011 chart review reproduced with the permission of Canadian Family Physician.⁶
↵† 95% CI -52.8% to -19.9%; P=.0003.