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. Author manuscript; available in PMC: 2009 Nov 26.
Published in final edited form as: Parent Sci Pract. 2008 Apr 1;8(2):117–152. doi: 10.1080/15295190802058900

TABLE 1.

Descriptive Statistics of Analysis Variables (Stratified by Race/Ethnicity)

Full sample (N = 1111)
Non-African American (n = 662)
African American (n = 449)
Variable M SD Min Max M SD Min Max M SD Min Max
Outcomes
 Positive emotion talk .93 .79 .00 5.54 .92 .74 .00 4.00 .96 .87 .00 5.54
 Negative emotion talk 1.40 1.00 .00 6.67 1.33 .91 .00 5.14 1.50 1.11 .00 6.67
Maternal demographics
 Income/needs ratio 1.84 1.72 .00 16.49 2.35 1.90 .00 16.49 1.09 1.02 .00 7.07
 Age 26.41 6.01 14.70 58.20 27.38 5.93 15.68 50.04 24.99 5.83 14.70 58.20
 Location (PA) .41 .49 .00 1.00 .67 .47 .00 1.00 .04 .19 .00 1.00
 Less than HS graduation .19 .40 .00 1.00 .16 .36 .00 1.00 .25 .43 .00 1.00
 HS graduation/GED .66 .47 .00 1.00 .63 .48 .00 1.00 .71 .46 .00 1.00
 Some college .15 .35 .00 1.00 .22 .41 .00 1.00 .04 .20 .00 1.00
Child characteristics
 Age (months) 7.70 1.45 5.03 15.38 7.27 1.36 5.03 13.44 8.35 1.34 5.55 15.38
 Attention .78 .19 .00 1.00 .80 .17 .12 1.00 .76 .20 .00 1.00
 Distress 3.13 .75 1.34 6.53 2.92 .68 1.34 5.34 3.46 .74 1.41 6.53
 Gender (male) .50 .50 .00 .00 .50 .50 .00 1.00 .51 .50 .00 1.00
Maternal qualities
 Knowledge of development 16.26 2.50 7.00 20.00 17.05 2.23 7.00 20.00 15.09 2.41 8.00 20.00
 Positive engagement 2.90 .79 1.00 4.80 3.19 .76 1.00 5.00 2.60 .83 1.00 4.75
 Negative intrusiveness 2.41 .77 1.00 5.00 2.48 .59 1.00 4.67 3.05 .69 1.67 5.00