Table 3.
Estimates of OPERA, 95 % confidence intervals (95 % CI) from fitting multiple mammographic density measures together, correlation between estimates (R) and log likelihood (LL) for dense area and percentage dense area
| OPERA (95 % CI) | P | R | LL | |
|---|---|---|---|---|
| Dense area | ||||
| Cumulus a | 0.73 (0.53−1.00) | 0.05 | -0.87 | -280.34 |
| Altocumulus a | 1.83 (1.30−2.57) | 0.001 | ||
| Cumulus b | 1.07 (0.88−1.30) | 0.5 | -0.6 | -285.22 |
| Cirrocumulus b | 1.19 (0.97−1.47) | 0.1 | ||
| Altocumulus c | 1.32 (1.07−1.65) | 0.01 | -0.62 | -282.17 |
| Cirrocumulus c | 1.04 (0.85−1.29) | 0.7 | ||
| Cumulus d | 0.71 (0.52−0.98) | 0.04 | -0.79 | -279.97 |
| Altocumulus d | 1.77 (1.24−2.51) | 0.002 | -0.19 | |
| Cirrocumulus d | 1.10 (0.89−1.36) | 0.4 | -0.22 | |
| Percentage dense area | ||||
| Cumulus a | 0.87 (0.66−1.14) | 0.3 | -0.81 | -280.79 |
| Altocumulus a | 1.59 (1.18−2.14) | 0.002 | ||
| Cumulus b | 1.15 (0.96−1.38) | 0.1 | -0.50 | -284.74 |
| Cirrocumulus b | 1.14 (0.94−1.37) | 0.2 | ||
| Altocumulus c | 1.39 (1.13−1.70) | 0.002 | -0.51 | -284.65 |
| Cirrocumulus c | 1.03 (0.86−1.25) | 0.7 | ||
| Cumulus d | 0.87 (0.66−1.15) | 0.3 | -0.74 | -284.165 |
| Altocumulus d | 1.55 (1.14−2.10) | 0.005 | -0.15 | |
| Cirrocumulus d | 1.05 (0.87−1.27) | 0.6 | -0.23 | |
OPERA Odds PER Adjusted standard deviation
a Cumulus and Altocumulus measures fitted together
b Cumulus and Cirrocumulus measures fitted together
c Altocumulus and Cirrocumulus measures fitted together
d Cumulus, Altocumulus and Cirrocumulus measures fitted together