Table 3.

Contingency Tables and Overlap Across Fibromyalgia Criteria

		Fibro index			Total fibro			Total Counts
		YES	NO	PPV OR NPV	YES	NO	PPV OR NPV
Widespread-Heavy (W-H)	yes	415	1,372	23.2%	637	1,150	35.6%	1,787
	no	458	16,275	97.3%	1,044	15,689	93.8%	16,733
	sen or spc	47.5%	92.2%		37.9%	93.2%
WPI/PF	yes	419	1,262	24.9%	623	1,058	37.1%	1,681
	no	454	16,385	97.3%	1,058	15,781	93.7%	16,839
	sen or spc	48.0%	92.8%		37.1%	93.7%
WPI/SS	yes	275	777	26.1%	419	633	39.8%	1,052
	no	598	16.870	96.6%	1,262	16,206	92.8%	17,468
	sen or spc	31.5%	95.6%		24.9%	96.2%
Overlap across criteria
W-H and WPI/PF	yes	348	833		500	681		1,181
W-H and WPI/SS	yes	225	514		332	407		139
WPI/PF and WPI/SS	yes	275	777		419	633		1,052
W-H, WPI/PF, and WPI/SS	yes	225	514		332	407		739
Total Counts		873	17,647		1,681	16,839		18,520

Abbreviation: Index Fibro, has ICD-10 diagnosis on index encounter; Total Fibro, has ICD-10 diagnosis associated with any encounter; W-H, Widespread-Heavy; WP1/SS, proxy combined CHOIR Widespread Pain Index and Symptom Severity Score derived from PROs; WPI/PF, proxy combined Widespread Pain Index and PROMIS Physical Function, sen, sensitivity; spc. specificity, PPV, positive predictive value, NPV, negative predictive value.

NOTE. Counts are shown except italicized percentages.