The data are in long form, with some studies having multiple lines and includes a sample of children ranging from 3.54 to 13.75 years old. The main effect size is the r, correlation coefficient, and the accompanying sample size is also included. Each article is coded to include a study number, the article name, and its authors, as well as a X moderators. The moderators are as follows:
 grade_new2 = sample grade category, where 1 = preschool/kindergarten, 2 = secondary
 HME_comp_new = HME component, where 1 = direct activities, 2 = indirect activities, 3 = combination direct and indirect activities, 4 = parent attitudes and/or beliefs, 5 = parent math expectations, 6 = spatial activities, 7 = math talk
 hme_type_nocombo = HME measurement method, where 1 = frequencybased scale, 2 = rating scale, 3 = checklist, 4 = observation
 obs_pr = twolevel HME measurement method variable, where 1 = observationbased, 2 = parentreport
 math_dom_nospat = math domain, where 1 = arithmetic operations, 2 = relations, 3 = numbering, 4 = multiple domains
 symbolic_nonsymbolic = refers to math assessment, where 1 = symbolic, 2 = nonsymbolic, 3 = combination symbolic and nonsymbolic
 timed_new = refers to math assessment, where 1 = timed, 2 = untimed, . = combination timed and untimed
 composite = refers to math assessment, where 1 = composite, 2 = single math assessment
 std_new = refers to math assessment, where 1 = standardized, 2 = unstandardized, . = combination standardized and unstandardized
 hme_calc = hme calculation method, where 1 = latent factor score, 2 = sum score, 3 = single item
 age = sample age in years
 long_new = refers to effect size, where 1 = longitudinal relation, 2 = concurrent relation
 low_SES = sample SES, where 1 = low SES (50% or more), 2 = average SES, 3 = high SES (50% or more)
 parent_ed = sample SES in terms of parent education level, based on the percentage of parents reported to have completed any postsecondary education (included a vocational certification, attended some college, and/or completed an associate’s, bachelor’s, or graduate degree program). The percentage was converted into a decimal value ranging from .00 to 1.00.
Items Connected to this Dataset

Code: Home Math Environment and Children's Math Achievement MetaAnalysis R code using the Metafor package
This code was written in R version 3.5.3 using the metafor package (Viechtbauer, 2010). First the dataset is called in, then the variables are converted to the correct formats for analysis, then the e...