Characteristic | Before PSM | After PSM | ||||
---|---|---|---|---|---|---|
Younger (<=53 y) N(%) | Older (> 53 y) N(%) | P | Younger (<=53 y) N(%) | Older (> 53 y) N(%) | P | |
Sex | < 0.001 | 0.613 | ||||
Male | 9134 (63.98) | 18,958 (59.81) | 9124 (63.96) | 9165 (64.24) | ||
Female | 5142 (36.02) | 12,740 (40.19) | 5142 (36.04) | 5101 (35.76) | ||
Race | < 0.001 | 0.322 | ||||
Black | 1020 (7.14) | 1939 (6.12) | 1014 (7.11) | 1063 (7.45) | ||
White | 12,199 (85.45) | 27,428 (86.53) | 12,195 (85.48) | 12,105 (84.85) | ||
Other | 1057 (7.40) | 2331 (7.35) | 1057 (7.41) | 1098 (7.70) | ||
Marital | < 0.001 | 0.739 | ||||
Single/Other | 5124 (35.89) | 10,484 (33.07) | 5116 (35.86) | 5143 (36.05) | ||
Married | 9152 (64.11) | 21,214 (66.93) | 9150 (64.14) | 9123 (63.95) | ||
Size | < 0.001 | 0.571 | ||||
Dmax<=4 cm | 7058 (49.44) | 12,966 (40.90) | 7052 (49.43) | 6981 (48.93) | ||
4 cm < Dmax<=7 cm | 3771 (26.41) | 10,175 (32.10) | 3771 (26.43) | 3847 (26.97) | ||
Dmax> 7 cm | 3447 (24.15) | 8557 (27) | 3443 (24.13) | 3438 (24.10) | ||
Grade | < 0.001 | 0.566 | ||||
I | 2204 (15.44) | 4226 (13.33) | 2199 (15.41) | 2243 (15.72) | ||
II | 7893 (55.29) | 16,362 (51.62) | 7890 (55.31) | 7873 (55.19) | ||
III | 3376 (23.65) | 8978 (28.32) | 3375 (23.66) | 3309 (23.20) | ||
IV | 803 (5.62) | 2132 (6.73) | 802 (5.62) | 841 (5.90) | ||
Laterality | 0.228 | 0.840 | ||||
Left | 6949 (48.68) | 15,622 (49.28) | 6946 (48.69) | 6963 (48.81) | ||
Right | 7327 (51.32) | 16,076 (50.72) | 7320 (51.31) | 7303 (51.19) | ||
SEER historic stage A | < 0.001 | 0.754 | ||||
Localized | 11,405 (79.89) | 21,988 (69.37) | 11,395 (79.88) | 11,345 (79.52) | ||
Regional | 1865 (13.06) | 6576 (20.75) | 1865 (13.07) | 1892 (13.26) | ||
Distant | 1006 (7.05) | 3134 (9.89) | 1006 (7.05) | 1029 (7.21) | ||
Radiation | 0.035 | 0.202 | ||||
NO | 13,967 (97.84) | 30,909 (97.51) | 13,960 (97.86) | 13,928 (97.63) | ||
YES | 309 (2.16) | 789 (2.49) | 306 (2.14) | 338 (2.37) | ||
Chemotherapy | < 0.001 | 0.274 | ||||
NO | 13,664 (95.71) | 29,986 (94.60) | 13,655 (95.72) | 13,617 (95.45) | ||
YES | 612 (4.29) | 1712 (5.40) | 611 (4.28) | 649 (4.55) |