Table 2.

Results of quality assessment of studies using the EPHPP^a Quality Assessment Tool for Quantitative Studies

Study authors and date	Selection bias	Study design	Confounders	Blinding	Data collection methods	Withdrawals and dropouts	Overall quality score
Physical activity
Barkley et al., 2014 [44]	Weak	Strong	Strong	Moderate	Strong	Strong	Moderate
Brown et al., 2009 [45]	Weak	Weak	Strong	Moderate	Weak	N/A	Low
Eaton & Keats, 1982 [46]	Weak	Strong	Strong	Moderate	Strong	Strong	Moderate
Gubbels et al., 2011 [47]	Moderate	Weak	Strong	Moderate	Weak	N/A	Low
Lehto et al., 2012 [48]	Weak	Weak	Strong	Moderate	Weak	N/A	Low
Schwarz, 1972 [49]	Weak	Strong	Weak	Strong	Weak	Strong	Low
Eating behaviors
Birch, 1980 [50]	Weak	Moderate	Weak	Moderate	Weak	Strong	Low
Duncker, 1938 [51]	Weak	Moderate	Weak	Weak	Weak	Weak	Low
Greenhalgh et al., 2009 [52]	Moderate	Strong	Weak	Moderate	Strong	Strong	Moderate
Hendy & Raudenbush, 2000 [53]	Moderate	Strong	Strong	Moderate	Weak	Moderate	Moderate
Hendy, 2002 [54]	Moderate	Strong	Strong	Moderate	Weak	Weak	Low
Lumeng & Hillman, 2007 [55]	Weak	Moderate	Strong	Moderate	Weak	Weak	Low
Marinho, 1942 [56]	Weak	Strong	Weak	Moderate	Weak	Weak	Low

^aEPHPP: Effective Public Health Practice Project