Ethnic group |
| Gender | Number of subjects | Mean | Std. Deviation | P-value |
Arab | IICD | male | 33 | 32.5 | 2.95 | 0.09 |
female | 59 | 33.54 | 2.79 | |||
OICD | male | 33 | 92.38 | 6.17 | 0.17 | |
female | 59 | 94.04 | 4.21 | |||
Black | IICD | male | 22 | 33.81 | 2.48 | 0.64 |
female | 40 | 34.13 | 2.62 | |||
OICD | male | 22 | 94.83 | 5.8 | 0.14 | |
female | 40 | 93.71 | 4.49 | |||
Hamites | IICD | male | 67 | 30.25 | 2.3 | 0.38 |
female | 59 | 29.89 | 2.24 | |||
OICD | male | 67 | 96.52 | 5.14 | 0.001 | |
female | 59 | 94.02 | 4.24 |