Table 6
Spearman correlation coefficients (r) of refraction versus lens thickness, refraction versus lens power, and lens thickness versus lens power in the group of twins with (+) IDDM and the group of twins without (−) IDDM
| Eye | n | r | p | |
|---|---|---|---|---|
| + IDDM: | ||||
| Refraction v lens thickness | R | 51 | −0.16 | 0.27 |
| L | 51 | −0.15 | 0.30 | |
| Refraction v lens power | R | 50 | −0.15 | 0.30 |
| L | 50 | −0.03 | 0.82 | |
| Lens thickness v lens power | R | 50 | 0.47 | 0.001 |
| L | 50 | 0.49 | 0.000 | |
| − IDDM: | ||||
| Refractionv lens thickness | R | 37 | 0.34 | 0.04 |
| L | 37 | 0.40 | 0.02 | |
| Refraction v lens power | R | 36 | 0.26 | 0.12 |
| L | 36 | 0.33 | 0.04 | |
| Lens thickness v lens power | R | 36 | 0.49 | 0.003 |
| L | 36 | 0.48 | 0.003 |
