Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Study ID | No of twin pairs | Type of zygosity | Occurrence of acute rheumatic fever | |
| Concordance | Disconcordance | |||
| Irvine-Jones 1933 [24] | 7 | MZ | 2 | 0 |
| DZ | 0 | 5 | ||
| Wilson 1937 [25] | 6 | MZ | 2 | 0 |
| DZ | 2 | 2 | ||
| Kaufmann 1938 [21] | 72 | MZ | 5 | 22 |
| DZ | 1 | 44 | ||
| Stevenson 1953 [23] | 10 | MZ | 1 | 0 |
| DZ | 0 | 9 | ||
| Taranta 1959 [26] | 56 | MZ | 3 | 13 |
| DZ | 1 | 39 | ||
| Reed 1964 [22] | 284 | MZ | 36 | 91 |
| DZ | 11 | 146 | ||
| Totals | 435 | MZ | 49 | 126 |
| DZ | 15 | 245 | ||
No, number; MZ, monozygotic; DZ, dizygotic.
