Researchers used a prospective cohort study to assess the validity and reliability of the Patient Centered Assessment Method (PCAM), a measure for evaluating patient complexity

They used negative binomial regression with LOS (length of stay in number of days) as the outcome variable, and PCAM as the principal covariate, while also controlling for age and gender. Figure 24.8 contains the results of this regression in the simplest of their models. What do you make of the influence of the three covariates on LOS? Sample size n = 201. Do you think the results might have been different with a larger sample?