. Author manuscript; available in PMC: 2015 Mar 1.

Published in final edited form as: Am J Prev Med. 2014 Mar;46(3):281–288. doi: 10.1016/j.amepre.2013.10.012

Table 1.

Number of children enrolled and participating in the physical activity assessments during the two-year study

	Fall 2011		Spring 2012		Fall 2012		Spring 2013
	N		N		N		N
Total children enrolled in afterschool program	461		541		459		483
Children with a minimum of one day of accelerometer wear^a	411	89.2%	468	86.5%	422	91.9%	445	92.1%
Children with a minimum of one day of accelerometer wear attending the program for at least 60 minutes^b	390	94.9%	442	94.4%	391	92.7%	418	93.9%
Average number of days children wore accelerometers while attending the program for at least 60 minutes		2.1		2.1		2.2		2.6

Represents the total number of unique children that had a monitor fitted to their waist on at least one day (e.g., Fall 2011, N = 411).

Represents children that had a monitor fitted to their waist who remained in the program for at least 60 minutes (e.g., of the 411, 390 stayed 60 minutes or longer).