The Measurement Trap in a Well-Being Program
A regional hospital system hires you to evaluate its 12-month physician well-being program (peer support, scheduled recovery time, and a burnout dashboard). Baseline burnout prevalence on the Maslach Burnout Inventory was 54%. At 12 months, the program reports 'significant improvement' based on a pre/post comparison: burnout now 41% (p < .01). You notice: (1) 38% of the original 420 physicians did not complete the follow-up survey, and non-completers had higher baseline exhaustion scores; (2) the program was rolled out first in the two departments with the lowest baseline burnout; (3) the dashboard was visible to department chairs, and three physicians mentioned they 'answered carefully'; (4) the system simultaneously reduced documentation requirements system-wide at month 8.
1. Evaluate the strength of the claim that the program reduced burnout. What are the specific threats to validity?
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The claim is not supportable as causal from this design. Specific threats:
- Attrition bias - 38% dropout with higher baseline exhaustion among non-completers means the remaining sample is selectively healthier. A meaningful share of the 13-point drop could be compositional, not real change. This is the largest threat.
- Selection/rollout confounding - starting in the lowest-burnout departments biases the pooled post-score downward and confounds department with exposure.
- Social desirability / demand characteristics - a dashboard visible to chairs creates pressure toward 'good' answers; self-report burnout under surveillance is a biased instrument.
- Co-intervention - the month-8 documentation reduction is a plausible independent cause of reduced exhaustion. Any improvement cannot be attributed to the program alone.
- Regression to the mean - modest, but relevant if departments were selected partly on high scores elsewhere.
- Pre/post with no comparison group - secular trends (e.g., staffing changes) are uncontrolled.
Conclusion: the direction may be favorable, but the effect size is indeterminate and likely overstated.
2. What analyses would you run to salvage what can be learned, and what would you tell leadership?
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Analyses:
- Attrition analysis: compare baseline scores of completers vs. non-completers; run a sensitivity analysis (e.g., multiple imputation or a worst-case/best-case bounding) to see how much of the 13-point drop survives plausible assumptions about non-completers.
- Stratify by department and rollout timing to separate program exposure from the documentation change.
- Interrupted time series if the dashboard has monthly data spanning before and after month 8 - this can partially separate the documentation effect from the program effect.
- Anonymity check: compare responses before and after the dashboard became chair-visible, if timing allows.
Message to leadership (plain, non-technical):
- 'The numbers moved in a good direction, and that's worth noting. But we can't yet say the program caused it, for three reasons: the people who dropped out were the most burned out, the program started where burnout was lowest, and a system-wide documentation change landed mid-program.'
- Recommend: retain the program (it's plausible and low-risk), but redesign the evaluation - independent anonymous survey channel, a comparison department, and pre-registered metrics for the next 12 months.
- Caution against publishing or marketing the 13-point figure; it would not survive scrutiny and could damage credibility.
3. The CMO says: 'We're keeping the program regardless - do we really need all this rigor?' How do you answer?
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Yes, and I'd explain why in terms of their interests, not methodological purity:
- Resource defense: the next budget cycle will ask whether the program works. A number that collapses under scrutiny is worse than an honest 'promising but unproven' - it invites cuts and undermines the well-being team's credibility.
- Physician trust: physicians are trained to read evidence. A program marketed on a biased pre/post will be discounted by the very people it's meant to reach, and the 'answered carefully' effect suggests they already suspect the measurement.
- Harm avoidance: if the dashboard pressures honest reporting, the program may be suppressing the signal it needs to help the most burned-out physicians - the non-completers are exactly the population at risk.
I'd offer a proportionate path: keep the program, fix the measurement (anonymous channel, comparison group, pre-specified metrics), and accept that rigor here is cheap relative to the program's cost. I'd also be clear about what I will and won't sign: I can support the program's continuation, but I won't endorse a causal claim the data can't bear.