Table 1

Selected characteristics for 331 patients with invasive anal cancer examined for HPV in Denmark and Sweden, 1991–1994

No. of patients (% hrHPV-positive patients)
WomenMen
No. of patientsa253 (90)78 (63)
Nationality
 Danish108 (90)44 (61)
 Swedish145 (90)34 (65)
PNULL =NULL 0.89PNULL =NULL 0.76
Age at diagnosis
 <5050 (94)15 (80)
 50–5957 (82)20 (70)
 60–6962 (94)18 (61)
 ≥7084 (90)25 (48)
PNULL =NULL 0.88PNULL =NULL 0.03
Lifetime no. of partnersb
 0 or 152 (87)13 (62)
 2 or 377 (91)7 (71)
 4 to 969 (91)17 (65)
 ≥1040 (88)32 (63)
PNULL =NULL 0.95PNULL =NULL 0.96
Heterosexual anal intercourse
 Yes34 (91)NAc
 No216 (90)
PNULL =NULL 1.00
Visit to a prostitute
 YesNA17 (76)
 No58 (60)
PNULL =NULL 0.26
Homosexual experience
 YesNA11 (100)
 No66 (58)
PNULL =NULL 0.006
Current smoker
 Yes91 (87)40 (58)
 No162 (92)38 (68)
PNULL =NULL 0.18PNULL =NULL 0.32
  • a Numbers do not add up to 253 for women and 78 for men for all variables because of missing values.

  • b Partners refer to partners of the opposite sex.

  • c NA, not applicable.