Experimental bias — allocation, masking and audit

Build a study workflow that keeps allocation generation, intervention delivery and outcome assessment distinct. Record unavoidable unmasking and analyse according to a predefined plan.

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{
  "nodes": [
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    { "id": "alloc", "type": "rounded", "label": "Concealed assignment", "x": 215, "y": 200, "width": 150, "height": 104, "fill": "#fef3c7", "stroke": "#b45309" },
    { "id": "deliver", "type": "rounded", "label": "Intervention delivery", "x": 390, "y": 200, "width": 150, "height": 104, "fill": "#fef3c7", "stroke": "#b45309" },
    { "id": "mask", "type": "octagon", "label": "Coded sample labels", "x": 390, "y": 520, "width": 150, "height": 104, "fill": "#e0f2fe", "stroke": "#0369a1" },
    { "id": "measure", "type": "card", "label": "Masked outcome assessment", "x": 565, "y": 200, "width": 150, "height": 104, "fill": "#ccfbf1", "stroke": "#0f766e" },
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    { "id": "lock", "type": "octagon", "label": "Analysis plan and data lock", "x": 740, "y": 200, "width": 150, "height": 104, "fill": "#e0f2fe", "stroke": "#0369a1" },
    { "id": "decode", "type": "rounded", "label": "Decode and report comparisons", "x": 915, "y": 200, "width": 150, "height": 104, "fill": "#fce7f3", "stroke": "#be185d" }
  ],
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}