Psoriasis may trigger osteoporosis particularly in women

[Caroline]

Quote:

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There was no significant difference between the two groups regarding vitamin D levels. The latter was significantly lower in psoriasis group than in controls for females; however, there was no significant difference between the two groups of males.

I don't get it as usual.
First they say there is no significant difference.
The latter, I guess the female P group, is significantly lower.
Between the male groups there is no difference.

Ok, well that doesn't add up.

Imagine the whole group has a level of 10, there is no difference so both are 10. This means that men and females all together gives no difference.
Let's calculate.
Women count for half of the group, so level 5, there is a significant difference, so the P group has level 2,5
Men no difference, so they are 5 and 5

* gets calculator *

Women healthy 5; women P 2,5
Men healthy 5; men 5
Totals
Healthy = 10 P = 7,5
While the conclusion says that there's no difference in the whole group.
Must be a new type of calculation.