Table 1

Amounts (μmol/24 hours) of salicyluric (SU) and salicylic (SA) acid excreted in the urine of non-vegetarians (n=27), vegetarians (n=21), and patients taking aspirin (75 mg/day (n=15) and 150 mg/day (n=24))

Patients taking aspirin
Non-vegetariansVegetarians75 mg150 mg
The values shown are median (range). SU: vegetarians v non-vegetarians, p<0.001; difference between the medians, 6.07 μmol/24 hours; 95% confidence intervals (CI), 3.92 to 9.31. SA: vegetarians v non-vegetarians, p=0.0166; difference between the medians 0.63 μmol/24 hours; 95% CI, 0.06 to 1.38. SU: aspirin 75 mg v 150 mg, difference between the medians not significant (p=0.743). SA: vegetarians v aspirin 75 mg; difference between the medians not significant (p=0.157). SA: vegetarians v aspirin 150 mg; difference between the medians not significant (p=0.369).
SU (24 h)3.91 (0.87–12.23)11.01 (4.98–26.60)170.69 (13.15–377.18)165.17 (5.62–429.12)
SA (24 h)0.31 (0.01–2.01)1.19 (0.02–3.55)0.41 (0.00–3.88)0.36 (0.04–7.10)