Table 1.
Balance in Covariates Before and After Matching between the Maltreated and Non-Maltreated Group/Controls.
| Mean | Standardized Mean Difference1 |
||||
|---|---|---|---|---|---|
| MT | Non-MT | CT (Non- MT Post Matching) |
Before Matching |
Post Matching |
|
| Distance | 0.6 | 0.3 | 0.6 | 1.16 | −0.00 |
| Age | 19.41 | 19.79 | 19.57 | −0.21 | −0.09 |
| Gender (female) | 63 % | 66 % | 70 % | −0.06 | −0.15 |
| IQ | 119.63 | 123.16 | 120.47 | −0.31 | −0.07 |
| Ethnicity (Caucasian) | 30% | 63% | 35.5% | −0.70 | −0.11 |
| SES | 7.53 | 7.9 | 7.36 | −0.24 | 0.09 |
| Baseline Internalizing symptoms | 127.65 | 100.29 | 127.07 | 1.02 | 0.02 |
| Average Absolute Standardized Mean Difference2 |
− | − | − | 0.42 | 0.09 |
MT = Maltreated group (n=100), Non-MT = Non-Maltreated group (n=127), CT = Control group (i.e. matched Non-Maltreated individuals; N = 96), IQ = intelligence quotient, SES = socio-economic status (i.e. parent with highest education level).
1
Each standardized mean difference is obtained by subtracting the mean in the MT group minus mean in the CT group, divided by the standard deviation of the MT group.
2
The average absolute standardized mean difference is the average of the absolute values of standardized mean differences for all covariates.