casemothers.dat: This file contains a header line (which is not read in by the program but is useful for reminding yourself of the column order), followed by a line of data for each of the 
SNPs to be analysed (IN EXACTLY THE SAME ORDER as given in emimmarkers.dat).
The first number on each line is the numeric SNP ID (as given in emimmarkers.dat). This is followed by 3 cell counts corresponding to the number of fully genotyped mothers of cases whose genotypes fall into the appropriate genotype categories. Note that these must not include mothers of cases already in the files caseparenttrios.dat, caseparents.dat, or casemotherduos.dat (i.e. all input data files must be independent).
For example, suppose that at the first SNP the genotypes of the mothers are
| group | mother | count |
|---|
| 1 | 22 | 18 |
| 2 | 12 | 160 |
| 3 | 11 | 358 |
Then the line in casemothers.dat corresponding to this SNP would look like:
1 18 160 358
An example of casemothers.dat for 8 SNPs, of which the first has counts as given above, is shown below:
snp cellcount 1-3
1 18 160 358
2 8 90 438
3 5 85 445
4 8 147 375
5 4 97 436
6 1 32 503
7 30 157 349
8 5 64 467
