Table 1:
Characteristic of ascertained insurance claims twin and sibling cohorts
| All Pairs | FF Pairs | MM Pairs | MF Pairs | |
|---|---|---|---|---|
| Number of twin pairs | 56,396 | 17,835 | 17,919 | 20,642 |
| Number of sibling pairs | 724,513 | 171,095 | 187,033 | 366,385 |
| Median age at start of surveillance (IQR) (twin) | 7 (3-13) | 8 (3-14) | 8 (3-13) | 7 (2-12) |
| Median age at start of surveillance (IQR) (sibling) | 7 (2-12) | 7 (2-12) | 7 (2-12) | 7 (2-12) |
| Median months of surveillance (IQR) (twin) | 60 (45-84) | 60 (45-84) | 60 (45-84) | 60 (45-84) |
| Median months of surveillance (IQR) (sibling) | 61 (46-84) | 61 (46-84) | 61 (46-84) | 61 (46-84) |
| Median number of ICD Codes (IQR) (twin) | 23 (12-42) | 23 (12-41) | 22 (11-41) | 24 (13-44) |
| Median number of ICD Codes (IQR) (sibling) | 23 (12-42) | 24 (13-42) | 22 (11-41) | 23 (12-42) |
| Distinct number of zip codes (twin) | 11,666 | 7,302 | 7,235 | 7,466 |
| Distinct number of zip codes (sibling) | 24,703 | 17,324 | 17,606 | 21,112 |
| Surveillance period | 01/01/2008 - 02/01/2016 | |||
FF Pairs, twin pairs where both individuals are female; MM Pairs, twin pairs where both individuals are male; MF pairs, twin pairs where one individual is male and the other is female.