Table 2.

Two Clusters Formed by Means of a Principal Component Analysis With Two Components

Cluster 1
Low Change
Cluster 2
High Change
Groups
 VT group70 (50.7%)20 (47.6%)
 WW group68 (49.3%)22 (52.4%)
Sex
 Male86 (62.3%)19 (45.2%)
 Female52 (37.7%)23 (54.8%)
Day care
 Yes11 (8.0%)36 (85.7%)
 No127 (92.0%)6 (14.3%)
Older siblings
 Yes122 (88.4%)27 (64.3%)
 No16 (11.6%)15 (35.7%)
Educational level mother
 Low47 (34.1%)0 (0%)
 Middle74 (53.6%)14 (33.3%)
 High17 (12.3%)28 (66.7%)
IQ of the child
 Low61 (43.3%)3 (7.7%)
 Middle49 (34.8%)11 (28.2%)
 High31 (22.0%)25 (64.1%)
  •  Explained variation = 8%.