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. 2019 Apr 9;11:2849–2870. doi: 10.2147/CMAR.S185319

Table S4.

Univariate and multivariate Cox regression analyses of PFS and CSS including chemotherapy received before and after propensity matching

Clinical parameter Unmatched (complete) dataset Propensity score-matched (1:1) dataseta
Univariate analyses Multivariate analyses Univariate analyses Multivariate analyses
HR (95% CI) p-value HR (95% CI) p-value HR (95% CI) p-value HR (95% CI) p-value
PFS Male 1.169 (0.879−1.556) 0.284 1.017 (0.761−1.359) 0.911 0.776 (0.508−1.187) 0.243 0.709 (0.457−1.102) 0.126
Age >60 years 1.678 (1.263−2.228) <0.001 1.409 (1.044−1.903) 0.025 1.270 (0.811−1.987) 0.296 1.230 (0.774−1.955) 0.380
Stage III−IV 3.311 (2.285−4.797) <0.001 2.163 (1.439−3.249) <0.001 2.717 (1.577−4.681) <0.001 1.794 (0.967−3.327) 0.064
ECOG PS 2−4 2.088 (1.486−2.935) <0.001 1.447 (1.006−2.081) 0.046 1.763 (1.067−2.914) 0.027 1.354 (0.786−2.332) 0.275
Extranodal sites >1 1.897 (1.415−2.545) <0.001 1.176 (0.856−1.614) 0.317 2.280 (1.476−3.522) <0.001 1.732 (1.046−2.868) 0.033
Non-GCB 1.904 (1.384−2.619) <0.001 1.660 (1.203−2.290) 0.002 1.601 (0.985−2.603) 0.058 1.857 (1.128−3.056) 0.015
B symptoms 1.912 (1.440−2.538) <0.001 1.235 (0.909−1.677) 0.177 1.673 (1.094−2.557) 0.017 1.091 (0.659−1.806) 0.735
LDH >ULN (271U/L) 3.041 (2.282−4.052) <0.001 2.048 (1.502−2.793) <0.001 2.459 (1.604−3.770) <0.001 1.808 (1.080−3.024) 0.024
Treatmentsb 0.961 (0.755−1.222) 0.743 0.926 (0.721−1.191) 0.550 1.057 (0.753−1.484) 0.747 0.936 (0.634−1.383) 0.741
Diabetic 1.744 (1.259−2.417) 0.001 1.457 (1.037−2.047) 0.030 1.607 (1.045−2.470) 0.031 1.672 (1.078−2.592) 0.022
CSS Male 0.948 (0.669−1.344) 0.764 0.817 (0.573−1.164) 0.263 0.721 (0.448−1.161) 0.179 0.657 (0.404−1.069) 0.091
Age ≥60 years 1.867 (1.316−2.647) <0.001 1.500 (1.035−2.175) 0.032 1.388 (0.835−2.308) 0.206 1.320 (0.774−2.250) 0.308
Stage III−IV 3.443 (2.135−5.551) <0.001 2.340 (1.389−3.942) 0.001 2.676 (1.433−4.998) 0.002 1.722 (0.842−3.525) 0.137
ECOG PS 2−4 2.730 (1.839−4.053) <0.001 1.854 (1.213−2.835) 0.004 2.178 (1.266−3.746) 0.005 1.614 (0.890−2.929) 0.115
Extranodal sites >1 1.976 (1.382−2.825) <0.001 1.179 (0.802−1.734) 0.402 2.742 (1.698−4.429) <0.001 1.901 (1.094−3.303) 0.023
Non-GCB 1.896 (1.280−2.810) 0.001 1.650 (1.108−2.457) 0.014 1.816 (1.036−3.184) 0.037 1.990 (1.110−3.567) 0.021
B symptoms 1.757 (1.241−2.489) 0.002 1.054 (0.723−1.538) 0.784 1.539 (0.956−2.477) 0.076 0.934 (0.532−1.640) 0.812
LDH >ULN (271U/L) 3.341 (2.336−4.778) <0.001 2.156 (1.462−3.178) <0.001 2.621 (1.616−4.251) <0.001 1.851 (1.034−3.313) 0.038
Treatments 1.081 (0.810−1.442) 0.597 1.068 (0.794−1.436) 0.665 1.192 (0.824−1.724) 0.351 1.059 (0.701−1.600) 0.784
Diabetic 2.713 (1.874−3.928) <0.001 2.258 (1.535−3.324) <0.001 2.145 (1.306−3.523) 0.003 2.052 (1.239−3.397) 0.005

Notes: aPropensity score-matched (1:1, 109 pairs) analyses were performed with a small caliper of 0.1 for matching potential confounders including sex, age, stage, ECOG PS, extranodal site(s), Hans classification, symptoms and LDH level. bTreatments referred to R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine and prednisone), DA-EPOCH+R (dose-adjusted (etoposide, prednisone, vincristine, cyclophosphamide and doxorubicin) plus rituximab), R-CHOP like regimens, and R-mini CHOP (rituximab combined with low-dose CHOP). p-values in bold < 0.05.

Abbreviations: PFS, progression-free survival; CSS, cancer-specific survival; ECOG, Eastern Cooperative Oncology Group; PS, performance status; GCB germinal center B-cell; LDH, lactate dehydrogenase; ULN, upper limit of normal.