| Interval cancer | P | LL | Screen-detected cancer | P | LL | |
---|---|---|---|---|---|---|---|
OPERA (95% CI) | OPERA (95% CI) | ||||||
Dense area | |||||||
 Model 1a | Cumulus | 1.40 (1.15–1.72) | 0.001 | − 206.91 | 1.05 (0.94–1.19) | 0.3 | − 541.75 |
Altocumulus | 0.97 (0.80–1.18) | 0.8 | 1.06 (0.94–1.19) | 0.3 | |||
 Model 2b | Cumulus | 1.16 (0.94–1.43) | 0.2 | − 204.46 | 0.98 (0.87–1.10) | 0.8 | − 538.16 |
Cirrocumulus | 1.26 (1.02–1.53) | 0.03 | 1.19 (1.06–1.34) | 0.005 | |||
 Model 3c | Altocumulus | 0.94 (0.76–1.16) | 0.6 | − 205.27 | 0.98 (0.87–1.10) | 0.8 | − 538.18 |
Cirrocumulus | 1.49 (1.20–1.87) | < 0.001 | 1.19 (1.06–1.34) | 0.005 | |||
 Model 4d | Cumulus | 1.27 (0.99–1.62) | 0.06 | − 203.34 | 0.99 (0.85–1.14) | 0.8 | − 538.16 |
Altocumulus | 0.84 (0.65–1.07) | 0.2 | 0.99 (0.86–1.15) | 0.9 | |||
Cirrocumulus | 1.36 (1.07–1.72) | 0.01 | 1.19 (1.04–1.36) | 0.008 | |||
Percent density | |||||||
 Model 1a | Cumulus | 1.67 (1.36–2.07) | < 0.001 | − 191.69 | 1.11 (0.99–1.25) | 0.09 | − 539.81 |
Altocumulus | 0.88 (0.72–1.07) | 0.2 | 1.02 (0.91–1.15) | 0.7 | |||
 Model 2b | Cumulus | 1.48 (1.19–1.95) | < 0.001 | − 192.00 | 1.02 (0.91–1.15) | 0.7 | − 536.68 |
Cirrocumulus | 1.10 (0.90–1.36) | 0.3 | 1.17 (1.03–1.31) | 0.01 | |||
 Model 3c | Altocumulus | 1.05 (0.85–1.31) | 0.6 | − 198.33 | 0.99 (0.89–1.11) | 0.9 | − 536.74 |
Cirrocumulus | 1.43 (1.16–1.77) | 0.001 | 1.20 (1.06–1.34) | 0.003 | |||
 Model 4d | Cumulus | 1.68 (1.30–2.19) | < 0.001 | − 190.33 | 1.05 (0.90–1.27) | 0.5 | − 536.56 |
Altocumulus | 0.79 (0.61–1.02) | 0.07 | 0.96 (0.82–1.12) | 0.6 | |||
Cirrocumulus | 1.21 (0.96–1.52) | 0.1 | 1.18 (1.04–1.34) | 0.01 |