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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: J Marriage Fam. 2015 Nov 13;78(2):562–579. doi: 10.1111/jomf.12266

Table 2.

Descriptive Statistics and Factor Loadings for Main Variables in the Model

Descriptive statistics Factor loadings
Variable Year 1 Year 2 Year 1 Year 2
M (SD) n M (SD) n Unstandardized Standardized Unstandardized Standardized
Obstacles to involvement 1.63 (1.22) 951
Practical support 4.31 (0.99) 991
Teacher/staff training 3.82 (1.20) 1,019
Parent involvement
 Classroom 1.17 (0.68) 955 1.00 a .80
 Social 0.54 (0.55) 955 1.23*** .81
Parent cognitive stimulation 10.62 (1.49) 956 10.59 (1.56) 956
Parent controlling behavior 17.92 (3.06) 956 18.18 (2.97) 943
Parents’ use of spanking 0.65 (1.09) 955 0.50 (0.95) 950
Behavior problems
 Hyperactivity 3.52 (2.91) 987 2.24 (2.58) 968 1.00 .86 1.00 .89
 Aggression 1.68 (1.97) 986 1.32 (1.82) 968 0.61*** .79 0.60*** .77
 Withdrawal 1.68 (2.05) 986 1.34 (1.83) 968 0.38*** .48 0.42*** .53
Positive learning behaviors
 Persistence 48.62 (10.14) 987 53.16 (8.91) 968 1.00 .92 1.00 .93
 Attitude 49.18 (10.05) 987 51.90 (9.10) 968 0.91*** .85 0.89*** .83
 Motivation 48.78 (10.08) 987 52.41 (9.35) 968 0.77*** .73 0.80*** .74
Literacy skills
 WJ—Letter Word 297.87 (18.65) 853 336.81 (26.21) 990 1.00 .59 1.00 .72
 WJ—Spelling Word 337.58 (28.77) 915 382.62 (28.67) 992 0.77*** .30 0.98*** .68
 PPVT 84.72 (15.66) 955 89.95 (15.24) 992 0.88*** .63 0.49*** .66
 Story & Print Concepts 2.85 (2.10) 831 6.06 (2.15) 973 0.10*** .54 0.07*** .66
Math skills
 ECLS-B Math 6.14 (2.40) 939 12.41 (3.62) 973 1.00 .97 1.00 1.00b
 WJ—Applied Problems 368.48 (24.24) 834 399.77 (20.69) 981 4.98*** .49 4.93*** .91

Note. WJ = Woodcock–Johnson; PPVT = Peabody Picture Vocabulary Test; ECLS-B = Early Childhood Longitudinal Study, Birth Cohort.

a

According to structural equation modeling requirements, for each factor, one variable loading was set to equal 1.00.

b

Residual variance was set to .001.

***

p < .001.