Table 1 Characteristics of women diagnosed with breast cancer in Stockholm, Sweden, 2001–2008, screening non-participants vs participants
Mammography screening | p value | ||
|---|---|---|---|
Participants | Non-participants | ||
Register data (n = 5098) | |||
Age, yearsa | < .001 | ||
40–49 | 161 (3.9) | 23 (2.4) | |
50–59 | 1879 (45.2) | 526 (55.8) | |
≥ 60 | 2116 (50.9) | 393 (41.7) | |
Menopausal status | 0.115 | ||
Pre-menopause | 554 (14.3) | 108 (12.3) | |
Post-menopause | 3313 (85.7) | 771 (87.7) | |
Unknown | 289 | 63 | |
Country of birth | 0.007 | ||
Nordic | 4068 (97.9) | 908 (96.4) | |
Non-Nordic | 88 (2.1) | 34 (3.6) | |
Marital status | < .001 | ||
Married | 2220 (54.3) | 449 (49.4) | |
Unmarried | 593 (14.5) | 133 (14.6) | |
Widowed | 299 (7.3) | 52 (5.7) | |
Divorced | 976 (23.9) | 274 (30.2) | |
Unknown | 68 | 34 | |
Charlson Comorbidity Index | 0.235 | ||
0 | 3649 (87.8) | 829 (88.0) | |
1 | 374 (9.0) | 92 (9.8) | |
≥ 2 | 133 (3.2) | 21 (2.2) | |
Family history of breast cancer | 0.417 | ||
No | 782 (28.4) | 193 (30.0) | |
Yes | 1975 (71.6) | 451 (70.0) | |
Unknown | 1399 | 298 | |
Questionnaire data (n = 3038) | |||
Education, years | 0.639 | ||
≤ 9 | 374 (19.1) | 70 (18.2) | |
9–12 | 553 (28.2) | 102 (26.5) | |
> 12 | 1033 (52.7) | 213 (55.3) | |
Other | 488 | 80 | |
Unknown | 104 | 21 | |
Employment status | 0.175 | ||
Employed | 1666 (68.3) | 332 (72.5) | |
Unemployed (≥ 6 months) | 35 (1.4) | 6 (1.3) | |
Retired | 626 (25.7) | 96 (21.0) | |
Long-term sick leave (≥ 6 months) | 65 (2.7) | 17 (3.7) | |
Housewife | 47 (1.9) | 7 (1.5) | |
Others or unknown | 113 | 28 | |
Cigarette smoking | 0.634 | ||
Never | 942 (38.3) | 173 (37.1) | |
Ever | 1518 (61.7) | 293 (62.9) | |
Unknown | 92 | 20 | |
Parity | 0.971 | ||
0 | 385 (15.6) | 71 (15.2) | |
1–2 | 1549 (62.6) | 295 (63.2) | |
≥ 3 | 540 (21.8) | 101 (21.6) | |
Unknown | 78 | 19 | |