Table 1 Regional pattern of syntactic overlap between NAPs
| Mean syntactic overlap (percentage) | Number of observations with syntactic overlap over 10% | Number of observations with syntactic overlap over 50% | |
|---|---|---|---|
| SEARO | 5.9 | 45 | 11 |
| EMRO | 5.5 | 56 | 1 |
| AFRO | 5.4 | 39 | 0 |
| PAHO | 4.4 | 4 | 0 |
| EURO | 3.9 | 16 | 0 |
| WPRO | 3.4 | 5 | 0 |