SSM versus LAM | Combined SSM and LAM versus SSM alone | ||||||
---|---|---|---|---|---|---|---|
N = 457 | SSM only | LAM only | p-value | SSM only | LAM only | SSM plus LAM | p-value |
Sensitivity | 29.4 % | 49.2 % | <0.001 | 29.4 %* | 49.2 % | 57.4 % * | <0.001 |
(95 % CI) | (23.2-36.3) | (42.1-56.4) | (23.2-36.3) | (42.1-56.4) | (50.1-64.4) | ||
n + ve/total | 58/197 | 97/197 | 58/197 | 97/197 | 113/197 | ||
Specificity | 98.8 % | 98.1 % | 0.476 | 98.8 % | 98.1 % | 98.1 % | >0.05 |
(95 % CI) | (96.7-99.8) | (95.6-99.4) | (96.7-99.8) | (95.6-99.4) | (95.6-99.4) | ||
n -ve/total | 257/260 | 255/260 | 255/260 | 255/260 | 255/260 | ||
PPV | 95.1 % | 95.1 % | 0.996 | 95.1 % | 95.1 % | 95.8 % | >0.05 |
(95 % CI) | (86.3-99.0) | (88.9-98.4) | (86.3-99.0) | (88.9–98.4) | (90.4-98.6) | ||
NPV | 64.9 % | 71.8 % | 0.042 | 64.9 %* | 71.8 % | 75.2 %* | <0.001 |
(95 % CI) | (60.0-69.6) | (66.8–76.5) | (60.0-69.6) | (66.8-76.5) | (70.3-79.7) |