Table 1: Patient characteristics (1989–1999).

CharacteristicAge  Total 𝑃   Value
70–7475–79≥80

Patients, number (%)151 (38)101 (27)141 (36)393 (100) NA

Race, number (%) 𝑃 0 . 0 0 1
S
 Black, non-Hispanic95 (63)66 (65)73 (52)234 (59)
  Asian0 (0)5 (5)7 (5)12 (3)
  White, non-Hispanic39 (26)2 (2)2 (1)43 (11)
  Hispanic17 (12)28 (28)59 (42)104 (26)

Size of tumor, median ± standard deviation, cm3.0 ± 2.72.5 ± 2.03.0 ± 1.96NA NA

Size of tumor, number (%)NA
 <1 cm (nonpalpable)8 (5)7 (7)12 (9)27 (7)
 ≥1 cm (palpable)126 (84)82 (80)113 (80)321 (82)
 Unknown16 (11)13 (13)16 (11)45 (11)

Stage, number (%) 𝑃 0 . 2 0
NS
  01013730 (8)
  138223393 (24)
  2593954152 (39)
  32392456 (14)
  420162460 (15)
  Unknown12811 (3)

Histologic type, number (%) 𝑃 1
NS
 Ductal104 (69)68 (67)88 (62)260 (66)
 Lobular4 (3)4 (4)10 (7)18 (4)
 Papillary2 (1)1 (1)1 (1)4 (1)
 Other41 (27)28 (28)42 (30)111 (28)

Grade, number (%) 𝑃 1
NS
 1 (well differentiated)7 (5)6 (6)6 (4)19 (5)
 2 (moderately differentiated)48 (32)26 (26)52 (37)126 (32)
 3 (poorly differentiated)24 (16)13 (13)20 (14)57 (14)
  Unknown72 (48)55 (54)63 (45)190 (43)

Estrogen receptor, number (%) 𝑃 0 . 2 0
NS
  Positive69 (46)44 (44)58 (41)171 (43)
  Negative14 (9)21 (21)13 (9)48 (12)
 Unknown68 (45)48 (47)70 (50)186 (47)

Progesterone receptor, number (%) 𝑃 1
NS
  Positive63 (42)32 (32)45 (32)140 (36)
  Negative24 (16)21 (21)26 (18)71 (18)
 Unknown64 (42)48 (47)70 (50)182 (46)

Surgical Procedure, number (%) 𝑃 1
NS
 Mastectomy66 (44)50 (49)65 (46)181 (46)
 Lumpectomy67(44)42 (41)60 (42)168 (42)
 No surgery18 (12)9 (9)16 (11)43 (11)

Chemotherapy, number (%) 𝑃 0 . 2 0
NS
 Yes22 (14)12 (12)11 (8)45 (12)
 No129 (85)89 (88)130 (92)348 (88)

Radiation therapy, number (%) 𝑃 0 . 1 0
NS
 Yes47 (31)21 (21)30 (21)98 (25)
 No104 (69)80 (79)111 (79)295 (75)

Hormonal therapy, number (%) 𝑃 1
NS
 Yes58 (39)38 (38)52 (37)148 (38)
  No93 (61)63 (62)89 (63)245 (62)

Had complete staging, number (%) 𝑃 0 . 2 0
NS
 Yes115 (76)73 (72)93 (66)281 (71)
 No36 (24)28 (28)48 (34)112 (28)

Alive at 5 years after initial contact, number (%) 𝑃 0 . 0 0 1
S
 Yes49 (32)35 (35)20 (14)104 (26)
 No102 (67)66 (65)121 (86)289 (73)

Abbreviation: NA: not applicable; NS: not significant; S: significant.