Measurement of prostaglandin metabolites is useful in diagnosis of small bowel ulcerations

Table 2 Factors associated with prostaglandin E major urinary metabolite concentrations

	Univariable linear regression (P value)
Age	P = 0.47 (0.067)
Gender (1, female; 0, male)	P = 0.26 (0.10)
Smoking (1, Current or former smoker; 0, Never smoker)	P = 0.17 (-0.13)
Pulmonary disease	P < 0.0001 (0.36)
History of surgery	P = 0.029 (0.20)
CRP	P = 0.078 (0.16)
Disease duration	P = 0.0040 (0.26)

The values of prostaglandin E major urinary metabolite were log-transformed. Significant P values are indicated in bold. CRP: C reactive protein.