Here is the design of a clinical trial:

Official Title: Finnish Trial on Practices of Anterior Cervical Decompression and Fusion (FACADE): A Protocol for a Prospective Randomized Non-inferiority Trial Comparing Outpatient vs. Inpatient Care

Included conditions:
- Cervical Radiculopathy

Study Armgroups:
- {'label': 'Inpatient', 'type': 'NO_INTERVENTION', 'description': 'patients staying in the hospital for 1-3 nights after surgery'}
- {'label': 'Outpatient', 'type': 'ACTIVE_COMPARATOR', 'description': 'discharge on the day of the surgery, usually within 6-8 hours after procedure', 'interventionNames': ['Procedure: Discharge on the day of surgery']}

Interventions:
- {'type': 'PROCEDURE', 'name': 'Discharge on the day of surgery', 'description': 'Patient discharge on the day of the surgery, usually within 6-8 hours after procedure', 'armGroupLabels': ['Outpatient']}

Primary Outcomes:
- {'measure': 'Change from baseline Neck Disability Index at 6 months after operation', 'description': 'Neck disability Index scale score ranges from 0 to 100%. Score 0 indicates no disability as score 100% indicates worst possible disability.', 'timeFrame': 'Before and up to 6 months after operation'}

Please estimate the sample size based on the assumption: 
The assumptions include no difference between treatment arms (ε=0 in NDI score improvements), equal sample sizes, a standard deviation of 23%, a one-sided 2.5% significance level (zα = 1.96), 90% statistical power (zβ = 1.28), and a 15% dropout rate.
Sample size
        The trial is primarily designed to ascertain whether outpatient care is non-inferior to inpatient care, at 6 months after surgery, with NDI as the primary outcome. Only one primary analysis will be used to assess non-inferiority. The trial is powered to detect an MID in the NDI score between the two study groups. We set the MID for NDI (17.3%) as our margin of non-inferiority Î based on the results by Parker et al.14 At the 6-month time point, non-inferiority can be claimed if the lower limit of the CI (based on difference in means in the NDI) is greater than the MID in the primary comparison. According to the CONSORT (Consolidated Standards of Reporting Trials) statement for non-inferiority and equivalence trials,10 secondary outcomes can be managed using either a superiority or equivalence framework. In our trial, all secondary outcomes will be assessed with an equivalence hypothesis, but since our trial is not necessarily powered for these comparisons, and to avoid issues with multiplicity, we consider them exploratory or hypothesis-generating.
        The sample size calculation is based on the primary outcome measure, NDI at 6 months after the surgery. The sample size is approximated using the equation (Equation 3.12 in Chow: Sample Size Calculations in Clinical Research, Third Edition CRC Press 2018) for non-inferiority test:
        
n1=Ï°n2andn2=(zÎ±+zÎ²)2Ï2(1+1Ï°)(ÎµâM)2

        Assuming no difference between treatment arms (Îµ=0 in NDI score improvements), equal sample sizes (x=1, the SD 23%), a margin of non-inferiority Î of 17.3%, one-sided 2.5% statistical significance criteria (zÎ± = 1.96) and 90% statistical power (zÎ² =1,28), we will need 44 patients per study group. Assuming a dropout rate of 15%, the group size increases to 52 patients. Accordingly, we set the recruitment target at 104 patients.