Table 1 12-month (Time 1) and 18-month (Time 2) descriptive statistics

5.15 (.89)

5.20 (.90)

4.05 (.68)

4.04 (.67)

4.42 (.68)

4.41 (.71)

4.02 (.61)

4.04 (.61)

4.97 (.98)

4.98 (1.01)

3.81 (.66)

3.78 (.66)

4.40 (.72)

4.39 (.72)

4.10 (.55)

4.11 (.61)

1.04 (1.19)

1.07 (1.16)

.48 (.78)

.54 (.84)

1.06 (1.16)

1.09 (1.26)

1.32 (1.24)

1.39 (1.31)

.97 (.99)

1.02 (1.02)

3.39 (.65)

3.37 (.65)

1.51 (.57)

1.57 (.64)