| Class | Global |
| Name | grr |
| Arguments | <trait prevalence> <Frequency of A allele> <genotypic risk ratio> [add|dom|rec] |
| <trait prevalence> <Frequency of A allele in cases> <Frequency of A allele in controls> case-control |
Calculates recurrence risks and segregation ratios under a diallelic generalized single major locus model specified via trait prevalence, ratio of penetrances and pattern of inheritance (codominant multiplicative, dominant or recessive).
If the case-control modifier is present, instead it expects the prevalence, risk allele frequency in cases, and risk allele frequency in controls. See sml for interpretation of the output.
Example:
>> grr 0.1 0.1 { 1.5 2 2.5 }
>> grr 0.1 0.2 0.1 case
------------------------------------------------
Single Major Locus Recurrence Risk Calculation
------------------------------------------------
Frequency(A): 0.110000; Pen(AA): 0.331; Pen(AB): 0.163; Pen(BB): 0.081
Trait Prev : 0.100000; Pop AR: 19.2%; Var(Add): 0.001655; Var(Dom): 0.000068
Measure MZ Twin Sib-Sib Par-Off Second
---------- ---------- ---------- --------- ----------
Rec risk 0.117 0.108 0.108 0.104
Rel risk 1.195 1.095 1.093 1.046
Odds rat 1.221 1.106 1.104 1.052
PRR 1.172 1.084 1.083 1.041
ibd|A-A 1.000 0.520 0.500 0.260
ibd|A-U 1.000 0.498 0.500 0.249
Freq of A if Affected: 0.200000 (0.040,0.320,0.640)
Freq of A if Unaffctd: 0.100000 (0.009,0.182,0.809)
Mating Proportion Risk to offspring
---------- ----------- ------------------
UnA x UnA 0.810 0.098
Aff x UnA 0.180 0.107
Aff x Aff 0.010 0.117
See also:
| sml | recurrence risks |
| << (sml) | Up to index | >> (ito) |