Table 2.
Spearman correlation coefficients of Crohn’s disease (CD), ulcerative colitis (UC), ultraviolet B exposure (UVB), latitude and lactase non persistence (LNP)
| Ulcerative colitis | LNP | UVB | Latitude | |
|---|---|---|---|---|
| Global | ||||
| CD | 0.75 | −0.73 | −0.53 | 0.56 |
| UC | 1 | −0.59 | −0.38 | 0.44 |
| LNP | 1 | 0.74 | −0.76 | |
| UVB | 1 | −0.98 | ||
| Europe | ||||
| CD | 0.68 | −0.59 | −0.38 | 0.39 |
| UC | 1 | −0.42 | −0,41 | 0.41 |
| LNP | 1 | 0.74 | −0.71 | |
| UVB | 1 | −0.99 | ||
| Non Europe | ||||
| CD | 0.79 | −0.54 | −0.40 | 0.49 |
| UC | 1 | −0.68 | −0.35* | 0.55 |
| LNP | 1 | 0.09* | −0.22* | |
| UVB | 1 | −0.86 | ||
Note:
*
All values were statistically significant except those that have an * mark (ie, P-value >0.05).