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Most national quality measures are reported individually

and interpreted, such as the Surgical Care Improvement

Project (SCIP), which consists of nine independent mea-

sures. At the most extreme, MIPS currently contains

271 measures, allowing participants to pick and choose

by which measures they are evaluated. However, it is safe to

say that no single metric can define ‘‘quality’’ in any domain,

especially health care. It has been shown that composite

scores provide better predictive performance and explain a

higher proportion of the observed variation

[5,6]

in general

and cardiac surgery. Although individual SCIP components

were not associated with soft-tissue infection rates, a

composite SCIP score was

[3]

. These trends have led to the

development of disease-specific scores, such as the Ameri-

can College of Surgeons colectomy score

[7]

. Importantly,

the RC-QS weighs the five components equally, while others

have shown that empiric weights with a shrinkage

estimator based on the measured reliability of the metric

may provide better performance

[8]

.

The work by Lawson and colleagues is an important step

in creating disease-specific quality measures in urology. The

future of health care reporting and reimbursement lies in

quality assessment across and within process, outcome, and

structure domains for specific disease cohorts. As these

measures will be specific to the clinical and technical

challenges of each disease and surgery, it is critical for

urologists to lead development and implementation.

Although the NCDB is a retrospective resource not devel-

oped with quality measurement in mind, it remains a useful

resource for preliminary investigation. Measure develop-

ment is an iterative process, and as measures are shown to

be important and useful, data collection efforts will follow.

This should include incorporation of patient-reported

outcomes, which may be the most challenging to collect,

yet may also be the most relevant. Finally, measure

development is fraught with competing interests from

many stakeholders and usually complex statistical compu-

tations. As a result, an open and transparent approach must

be taken, including the publication of relevant software and

code so that others may reproduce the results and iterate

[9]

.

Although patient data cannot be shared, many investigators

have independent access to similar data sets (such as the

NCDB), allowing for rapid validation and iteration.

Whether we like it or not, quality measures will play an

increasingly dominant role in health care delivery. As a field,

we must take a leadership role to ensure appropriate,

accurate, and fair measures are adopted that promote

patient-centered care.

Conflicts of interest:

The authors have nothing to disclose.

References

[1] Chun J, Bafford AC. History and background of quality measurement.

Clin Colon Rectal Surg 2014;27:5–9.

http://dx.doi.org/10.1055/ s-0034-1366912

.

[2] Ingraham AM, Cohen ME, Bilimoria KY, et al. Association of surgical

care improvement project infection-related process measure com-

pliance with risk-adjusted outcomes: implications for quality mea-

surement. J Am Coll Surg 2010;211:705–14.

http://dx.doi.org/10. 1016/j.jamcollsurg.2010.09.006

.

[3] Stulberg JJ, Delaney CP, Neuhauser DV, Aron DC, Fu P, Koroukian SM.

Adherence to surgical care improvement project measures and the

association with postoperative infections. JAMA 2010;303:2479–85.

http://dx.doi.org/10.1001/jama.2010.841

.

[4] Lawson KA, Saarela O, Aboussaly R, Kim SP, Breau RH, Finelli A. The

impact of quality variations on patients undergoing surgery for renal

cell carcinoma: a National Cancer Database study. Eur Urol

2017;72:379–86.

http://dx.doi.org/10.1016/j.eururo.2017.04.033 .

[5] O’Brien SM, Shahian DM, DeLong ER, et al. Quality measurement in

adult cardiac surgery: part 2—statistical considerations in composite

measure scoring and provider rating. Ann Thorac Surg 2007;83:

S13–26.

http://dx.doi.org/10.1016/j.athoracsur.2007.01.055 .

[6] Dimick JB, Staiger DO, Hall BL, Ko CY, Birkmeyer JD. Composite

measures for profiling hospitals on surgical morbidity. Ann Surg

2013;257:67–72.

http://dx.doi.org/10.1097/SLA.0b013e31827b6be6

.

[7] Merkow RP, Hall BL, Cohen ME, et al. Validity and feasibility of the

American College of Surgeons colectomy composite outcome quality

measure. Ann Surg 2013;257:483–9

. http://dx.doi.org/10.1097/SLA. 0b013e318273bf17 .

[8] Dimick JB, Staiger DO, Hall BL, Ko CY, Birkmeyer JD. Composite

measures for profiling hospitals on surgical morbidity. Ann Surg

2013;257:67–72.

http://dx.doi.org/10.1097/SLA.0b013e31827b6be6

.

[9] Peng RD. Reproducible epidemiologic research. Am J Epidemiol

2006;163:783–9.

http://dx.doi.org/10.1093/aje/kwj093 .

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