| 8 (range, 5–10) |
| 1 very poor Arab country (Yemen) | 3 |
| 2 poor Arab countries (Jordan, Syria) | 10 |
| 6 wealthy Arab countries | 16 (range, 13–19) |
| Yemenite Jews, traditional | ~0 |
| Yemenite Jews, Westernized | 13 |
| Africans |
| rural Tanzania | 1 |
| Rwanda | 2 |
| urban South Africa | 8 |
| U.S. African-Americans | 13 |
| Asian Indians |
| urban India, 1938–1959 | ~1 |
| rural India today | 0.7 |
| urban Singapore | 17 |
| urban Mauritius | 17 |
| urban Kerala | 20 |
| urban Fiji | 22 |
| Chinese |
| rural China | ~0 |
| urban Hong Kong | 9 |
| urban Singapore | 10 |
| urban Taiwan | 12 |
| urban Mauritius | 13 |
| Pacific Islanders |
| Nauru, 1952 | 0 |
