\begin{Schunk}
\begin{Sinput}
 cbind("F", nhanes,"imp1",complete(imp2,3),"imp2",complete(imp,3))
\end{Sinput}
\begin{Soutput}
   "F" age bmi hyp chl "imp1" age bmi hyp chl "imp2" age bmi hyp chl
1    F   1  NA  NA  NA   imp1   1  35   1 187   imp2   1  30   1 199
2    F   2  23   1 187   imp1   2  23   1 187   imp2   2  23   1 187
3    F   1  NA   1 187   imp1   1  30   1 187   imp2   1  29   1 187
4    F   3  NA  NA  NA   imp1   3  25   1 284   imp2   3  26   1 206
5    F   1  20   1 113   imp1   1  20   1 113   imp2   1  20   1 113
6    F   3  NA  NA 184   imp1   3  20   2 184   imp2   3  26   2 184
7    F   1  22   1 118   imp1   1  22   1 118   imp2   1  22   1 118
8    F   1  30   1 187   imp1   1  30   1 187   imp2   1  30   1 187
9    F   2  22   1 238   imp1   2  22   1 238   imp2   2  22   1 238
10   F   2  NA  NA  NA   imp1   2  27   1 229   imp2   2  28   2 204
11   F   1  NA  NA  NA   imp1   1  30   1 131   imp2   1  33   1 206
12   F   2  NA  NA  NA   imp1   2  30   1 206   imp2   2  22   1 238
13   F   3  22   1 206   imp1   3  22   1 206   imp2   3  22   1 206
14   F   2  29   2 204   imp1   2  29   2 204   imp2   2  29   2 204
15   F   1  30   1  NA   imp1   1  30   1 238   imp2   1  30   1 199
16   F   1  NA  NA  NA   imp1   1  30   1 238   imp2   1  30   1 187
17   F   3  27   2 284   imp1   3  27   2 284   imp2   3  27   2 284
18   F   2  26   2 199   imp1   2  26   2 199   imp2   2  26   2 199
19   F   1  35   1 218   imp1   1  35   1 218   imp2   1  35   1 218
20   F   3  26   2  NA   imp1   3  26   2 218   imp2   3  26   2 206
21   F   1  NA  NA  NA   imp1   1  28   1 238   imp2   1  22   1 118
22   F   1  33   1 229   imp1   1  33   1 229   imp2   1  33   1 229
23   F   1  28   1 131   imp1   1  28   1 131   imp2   1  28   1 131
24   F   3  25   1  NA   imp1   3  25   1 284   imp2   3  25   1 206
25   F   2  27   1 186   imp1   2  27   1 186   imp2   2  27   1 186
\end{Soutput}
\end{Schunk}
