Clinical Trials Study
Copyright ©The Author(s) 2015.
World J Gastroenterol. Jan 7, 2015; 21(1): 292-300
Published online Jan 7, 2015. doi: 10.3748/wjg.v21.i1.292
Figure 1
Figure 1 Depiction of the three structural equation models which were tested for the Birmingham irritable bowel syndrome scale. n = 875. All latent variables were fixed to M = 0, SD = 1. Residuals of the manifest variables are omitted for the sake of simplicity. Constip: Constipation; diarrh: Diarrhea; g: General factor of gastrointestinal symptoms.