Table 2.

Sample Statistics

Variable (range, if applicable)	TP	n	Mean	SD	Sample Range
Maternal EPDS symptomatology 2G (score ≥ 7 = 1)	2	138	0.39	0.49	0 – 1
Maternal self-efficacy (0 – 30)	2	139	26.53	3.25	18 – 30
Maternal education 2G (some college = 1)	1	141	0.44	0.50	0 – 1
IBQ infant self-regulation (1 – 7)	3	142	5.26	0.84	2.08 – 6.92
IBQ infant negative affect (1 – 7)	3	142	4.23	1.08	1.45 – 6.67
Bayley-III infant cognition raw score	3	137	37.13	4.37	27 – 47
Infant age in months	3	142	11.18	0.91	8.7 – 12.8
Infant race 2G (Black or African American = 1)	1	142	0.51	0.50	0 – 1
Infant sex (female = 1)	1–3	142	0.56	0.50	0 – 1

Note. Results from non-imputed data and values rounded to the nearest hundredth when applicable. For the variable scores that were transformed into dummy variables, or two groups (2G), the group given value = 1 is listed in parentheses next to the variable name. The other continuous variables have the possible range in parentheses after the variable name, when applicable. For infant race non-Black or African American, 93.9% mothers reported only White or Caucasian race and 6.1% mothers reported only Asian race. Other acronyms used in the table include TP = Time Point; SD = standard deviation; IBQ = Infant Behavior Questionnaire-Revised Very Short Form.