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. 2019 Dec 10;9:18689. doi: 10.1038/s41598-019-55150-6

Table 2.

Relative risk of subsequent brain metastasis of stage IIIB or IV NSCLC patients.

Unadjusted RR (95% CI) P-value Adjusted RR (95% CI) P-value
Age
    <30 vs. 40–49 1.869 (1.610–2.169) <0.0001 2.105 (1.815–2.445) <0.0001
    <30 vs. 50–59 2.907 (2.494–3.401) <0.0001 2.994 (2.570–3.496) <0.0001
    <30 vs. 60–69 4.049 (3.322–4.926) <0.0001 3.846 (3.165–4.695) <0.0001
    <30 vs. ≥70 3.690 (2.525–5.405) <0.0001 3.521 (2.421–5.128) <0.0001
Sex (female vs. male) 2.364 (2.110–2.653) <0.0001 1.821 (1.600–2.070) <0.0001
Anticoagulation (non-user vs. user) 0.873 (0.860–1.236) 0.445 0.905 (0.642–1.277) 0.571
COPD (absence vs. presence) 2.083 (1.376–3.165) 0.001 1.170 (0.769–1.779) 0.465
First-line systemic treatment (TT vs. CC) 2.427 (2.169–2.717) <0.0001 1.976 (1.745–2.242) <0.0001

Abbreviations: RR, relative risk; CI, confidence interval; CC, cytotoxic chemotherapy; TT, targeted therapy; COPD, chronic obstructive pulmonary disease.