Table 3.

Predicted Means for Forward Digit Span in the PSID-CDS.

Age	Mean	SE	LCI	UCI
3	3.09	.19	2.72	3.46
4	4.41	.13	4.17	4.66
5	5.55	.08	5.38	5.71
6	6.50	.07	6.37	6.63
7	7.30	.06	7.18	7.42
8	7.96	.06	7.84	8.07
9	8.48	.06	8.37	8.59
10	8.90	.05	8.79	9.00
11	9.22	.05	9.12	9.32
12	9.46	.05	9.36	9.57
13	9.64	.06	9.53	9.75
14	9.78	.06	9.66	9.89
15	9.88	.06	9.76	10.00
16	9.97	.06	9.84	10.09
17	10.06	.08	9.91	10.21
18	10.17	.11	9.95	10.38
19	10.31	.16	9.98	10.64

Note: Estimates were calculated by running a weighted multilevel model where age was a cubic function. Missing data were handled using multiple imputation.