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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Breast Cancer Res Treat. 2017 Sep 26;167(2):425–437. doi: 10.1007/s10549-017-4511-2

Table 1.

Proportions of sociodemographic characteristics with ethnicity: All ethnicities (N=823)

Bantu
(N=661)
Nilote
(N=143)
Cushite
(N=19)
Total
(N=823)
P values-All* P values - Bantus and Nilotes only*
N (%) N (%) N (%) N (%)
Mean age at diagnosis 49.2 50.8 42.7 49.3
Median age at diagnosis (IQR) 48 (40–57) 52 (39–59) 36 (32–56) 48 (40–57) 0.03** 0.24**
Age at diagnosis 20–29 23 (3.5) 5 (3.5) 2 (10.5) 30 (3.7) 0.005 0.02
30–39 129 (19.6) 34 (23.8) 8 (42.1) 171 (20.9)
40–49 209 (31.8) 27 (18.9) 3 (15.8) 239 (29.2)
50+ 296 (45.1) 77 (53.9) 6 (31.6) 379 (46.3)
Missing 4 0 0 4
Highest level of education None 188 (28.4) 53 (37.1) 14 (73.7) 255 (31.0) 0.0002 0.03
Primary 132 (20) 24 (16.8) 2 (10.5) 158 (19.2)
Secondary 181 (27.4) 25 (17.5) 0 (0) 206 (25.0)
Tertiary 160 (24.2) 41 (28.7) 3 (15.8) 204 (24.8)
Missing 0 0 0 0
Place of residence Rural 414 (62.6) 92 (64.3) 1 (5.3) 507 (61.6) <0.0001 0.70
Urban 247 (37.4) 51 (35.7) 18 (94.7) 316 (38.4)
Missing 0 0 0 0
Occupation Farmer 224 (34) 29 (20.3) 0 (0) 253 (30.8) <0.0001 0.001
Employed worker 144 (21.9) 45 (31.5) 2 (10.5) 191 (23.3)
Trader 126 (19.1) 20 (14) 5 (26.3) 151 (18.4)
Housewife 103 (15.6) 38 (26.6) 11 (57.9) 152 (18.5)
Casual worker 25 (3.8) 5 (3.5) 0 (0) 30 (3.7)
Other (specify) 37 (5.6) 6 (4.2) 1 (5.3) 44 (5.4)
Missing 2 0 0 2
BMI classification Normal (<25) 152 (29.9) 49 (36.8) 5 (29.4) 206 (31.3) 0.11 0.04
Overweight (25.00 - 29.99) 213 (41.9) 40 (30.1) 5 (29.4) 258 (39.2)
Obese (>=30) 143 (28.2) 44 (33.1) 7 (41.2) 194 (29.5)
Missing 153 10 2 165
Alcohol Use No 605 (91.5) 131 (91.6) 17 (89.5) 753 (91.5) 0.95 0.98
Yes 56 (8.5) 12 (8.4) 2 (10.5) 70 (8.5)
Missing 0 0 0 0
Exposure to smokinga Never exposed 371 (56.1) 88 (61.5) 13 (68.4) 472 (57.4) 0.30 0.24
Exposed 290 (43.9) 55 (38.5) 6 (31.6) 351 (42.7)
Missing 0 0 0 0
*

p-values from chi-square test except where noted missing data were excluded from percentage calculations and statistical comparisons.

**

p-values from Kruskal-Wallis test.

a

Only 3.28% (n=27) of study participants reported ever having smoked or used smokeless tobacco. Exposure to smoking is summarized here as exposed/never exposed, where exposed is defined as personal use of tobacco as well as exposure to smoke at the workplace or home during child or adulthood.