The frequency of vitamin D deficiency in adults with Crohn’s disease: Statistical analysis

In: Crohn's disease

29 Jul 2012

Descriptive statistics were reported as a mean ± SD for continuous variables that were normally distributed, unless otherwise stated. Results for the group of Crohn’s disease patients with serum 25-OHD deficiency were compared with those of the patient group with normal levels of 25-OHD. For comparison of means of continuous variables between two groups, an unpaired t-test was performed. If the data was not normally distributed the Mann-Whitney rank test was employed. Comparison of discontinuous variables was performed using a %2 test.

To determine if any continuous variables could predict vitamin D status in the Crohn’s disease patients, a univariate analysis of the data from the 242 patients was first performed using Pearson’s correlation test. All significantly associated variables were then subjected to forward stepwise regression analysis to develop a multivariate model.

For all tests, significance was defined as P<0.05 (95% CI), with normality and variance defined at P<0.01. The statistical program Sigma Stat (V.2.03, SPSS Inc, USA 1998) was used for all statistical procedures. It’s your turn to find cephalexin 500mg buy here to see how advantageous your shopping can be.


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