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Table 3 Psychiatric diagnosis, consultation and referral in patients with a PRIME-MD diagnosis, by study limb (N (%))

From: Failure of a patient-centered intervention to substantially increase the identification and referral for-treatment of ambulatory emergency department patients with occult psychiatric conditions: a randomized trial [ISRCTN61514736]

  Study Limb
  Tell Neither Tell Patient Tell Both
Patients with a PRIME-MD diagnosis and a: 9 20 22
   Physician psychiatric diagnosis 0 (0%) 2 (10%) 4 (18%)
   Physician psychiatric consultation or referral 1 (11%) 3 (15%) 4 (18%)
   Physician psychiatric diagnosis, consultation, or referral 1 (11%) 3 (15%) 4 (18%)
Frequentist 95% CI 0%, 48% 3%, 38% 5%, 40%
Bayesian Analysis of these data* mean
95% Credible Interval
Prior distribution for limb 7%
0%, 23%
20%
0%, 87%
20%
0%, 87%
Likelihood for limb (from observed data) 11%
0%, 37%
15%
3%, 33%
18%
5%, 36%
Posterior distribution for limb 9%
1%, 22%
15%
4%,33%
18%
6%, 36%
  1. *All probabilities are modelled as beta distributions. The traditional, frequentist 95% confidence intervals for the trial can be compared to the 95% credible intervals of the posterior distributions produced by the Bayesian analysis which combines prior beliefs about the results of each limb with the observed data (see text and [14]).