Table 3 Significant differences between the image types
From: Usefulness of grayscale inverted images in addition to standard images in digital mammography
Parameter | Image type | No (%) | Yes (%) | Cochran’s Q | p | Multiple comparison |
|---|---|---|---|---|---|---|
Macro-calcification | (a) Standard | 234 (73.58) | 84 (26.42) | 8.375 | 0.015* | (c) |
(b) Grayscale inverted | 232 (72.96) | 86 (27.04) | ||||
(c) Std + Gsi | 225 (70.75) | 93 (29.25) | (a) | |||
Micro-calcification | (a) Standard | 287 (90.25) | 31 (9.75) | 68.509 | <0.001¶ | (b) (c) |
(b) Grayscale inverted | 265 (83.33) | 53 (16.67) | (a) (c) | |||
(c) Std + Gsi | 237 (74.53) | 81 (25.47) | (a) (b) | |||
Intramammary Lymph Nodes | (a) Standard | 269 (84.59) | 49 (15.41) | 6.461 | 0.039† | (c) |
(b) Grayscale inverted | 261 (82.08) | 57 (17.92) | ||||
(c) Std + Gsi | 259 (81.45) | 59 (18.55) | (a) |