[R-meta] Follow-up: Coding multi-measure correlational studies

[Yuhang Hu]

Dear Wolfgang,

Thank you so much for your guidance here:
https://stat.ethz.ch/pipermail/r-sig-meta-analysis/2023-December/005026.html

There, you noted that multi-measure studies may be coded by creating two
variables/columns for measure (measure1 and measure2).

But if the multi-measure studies were additionally longitudinal, how should
I code for Time? How many new Time columns should I add?

    study    ri   ni  var1  var2  measure1 measure2
1)  2        .1   78  1     2     a        b
...
7)  2        .3   78  1     8     a        x
8)  2        .2   78  1     8     a        y
9)  2        .4   78  2     3     b        c
...
14) 2        .3   78  2     8     b        x
15) 2        .2   78  2     8     b        y
16) 2        .5   78  3     4     c        d
...
20) 2        .4   78  3     8     c        x
21) 2        .5   78  3     8     c        y
22) 2        .1   78  4     5     d        e
...
25) 2        .0   78  4     8     d        x
26) 2        .1   78  4     8     d        y
27) 2        .3   78  5     6     e        f
...
29) 2        .3   78  5     8     e        x
30) 2        .2   78  5     8     e        y
31) 2        .2   78  6     7     f        g
32) 2        .3   78  6     8     f        x
33) 2        .1   78  6     8     f        y
34) 2        .1   78  7     8     g        x
35) 2        .2   78  7     8     g        y
36) 2        .3   78  8     8     x        y

	[[alternative HTML version deleted]]