Radiographers supporting radiologists in the interpretation of screening mammography: a viable strategy to meet the shortage in the number of radiologists

Table 5 Model outcomes for different scenarios, Mexico 2012

Strategy		Total cost per month		% of true-positives results	% of false-negatives results	% of false-positives results	Average cost per case found
Strategy		(in US Dollars)		% of true-positives results	% of false-negatives results	% of false-positives results	(in US Dollars)
(A)	Radiologist only	Mean	17,019	0.356	0.14	15.55	51,403
(A)	Radiologist only	95 % CI	16,376–17,651	0.23–0.48	0.23–0.23	14.88–16.26	38,124–79,563
(B)	Radiographers only	Mean	44,165	0.341	0.155	47.13	139,263
(B)	Radiographers only	95 % CI	43,556–45,067	0.22–0.45	0.08–0.23	46.11–48.1	105,531–215,858
(C)	Radiographers and radiologist	Mean	16,331	0.342	0.154	16.99	51,347
(C)	Radiographers and radiologist	95 % CI	15,755–16,921	0.23–0.47	0.08–0.24	14.33–17.68	37,363–76,350
Incremental (B-A)		Mean	27,146	−0.015	0.015	31.58	87,860
Incremental (B-A)		95 % CI	25,376–28,916	−0.364–0.334	−0.219–0.249	29.14–34.02	15,356–160,365
Incremental (C-A)		Mean	−687	−0.014	0.015	1.44	−56
Incremental (C-A)		95 % CI	−2415–1040	−0.351–0.323	−0.219–0.249	−4.04–6.93	−3625–3512

Note: Average cost per case found = total cost per month/(-% of true-positives results/100*average number of mammographies read per month)
The denominator of percentages of true positives, false negatives and false positives is the whole sample. The exchanged rate used was 13 Mexican Pesos per USD (January, 2014)

ISSN: 1471-2407