Table 1.

Characteristics of secondary lymphedema cases and controls

CasesControlsP
N80108
Age, y (current)60 (37–93)54 (22–78)<0.01
Age at diagnosis (BC)54 (30–77)51 (20–74)0.015
Age at diagnosis (LE)56 (37–82)
Body mass index28.6 (19.6–48.4)27.5 (19.2–43.9)0.23
Mastectomy33 (41%)51 (47%)0.46
Radiation68 (85%)63 (58%)<0.01
Risk factors
 Blood draw7 (9%)21 (19%)0.06
 Blood pressure9 (11%)18 (17%)0.40
 Cat scratch7 (9%)20 (18%)0.09
 Cut24 (30%)47 (44%)0.07
 Insect bite22 (28%)24 (22%)0.49
 Manicure18 (22%)31 (29%)0.40
 Sun pain9 (11%)16 (15%)0.52

NOTE: Values in table expressed as either mean (%) or mean (range).

Abbreviations: BC, breast cancer; LE, lymphedema.