General model of a dataset with a three-level nested data structure with repeated measures
| Period t (repeated measure) level 1 (1) | (Observation) (individual j) level 2 (2) | Group k level 3 (3) | Ytjk (4) | X1jk (5) | X2jk (6) | … | XQjk (7) | W1k (8) | W2k (9) | ⫶ | WSk (10) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | Y111 | X111 | X211 | … | XQ11 | W11 | W21 | ⫶ | WS1 |
| 2 | 1 | 1 | Y211 | X111 | X211 | XQ11 | W11 | W21 | WS1 | ||
| ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ||
| T1 | 1 | YT111 | X111 | X211 | XQ11 | ||||||
| T1 + 1 | 2 | YT1+1,21 | X121 | X221 | XQ21 | ||||||
| T1 + 2 | 2 | YT1+2,21 | X121 | X221 | XQ21 | ||||||
| ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ||||||
| T2 | 2 | 1 | YT221 | X121 | X221 | XQ21 | W11 | W21 | WS1 | ||
| ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ||
| TJ−1 + 1 | J | K | YTJ−1+1,JK | X1JK | X2JK | XQJK | W1K | W2K | WSK | ||
| TJ−1 + 2 | J | K | YTJ−1+2,JK | X1JK | X2JK | XQJK | W1K | W2K | WSK | ||
| ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ||
| TJ | J | K | YTJJK | X1JK | X2JK | XQJK | W1K | W2K | WSK |
| Period | (Observation) (individual | Group | … | ⫶ | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | … | ⫶ | |||||||
| 2 | 1 | 1 | |||||||||
| ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ||
| 1 | |||||||||||
| 2 | |||||||||||
| 2 | |||||||||||
| ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ||||||
| 2 | 1 | ||||||||||
| ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ||
| ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ⫶ | ||
Note:
The dataset will have a balanced longitudinal data structure if T1 = T2 − T1 = … = TJ − TJ−1
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