Table 2 Distribution of cases and controls, associated odds ratios (OR) and 95% confidence intervals (CI) by vitamin K status
From: Vitamin K and childhood cancer: a report from the United Kingdom Childhood Cancer Study
Leukaemia | |||||
|---|---|---|---|---|---|
Vitamin K status | All cancers ( n =2530) | Total ( n =1174) | ALLa (n =1001) | Other cancersb (n =1356) | Controls ( n =4487) |
Number (%) | |||||
Intramuscular | 991 (39%) | 456 (39%) | 394 (39%) | 535 (39%) | 1868 (42%) |
Oral | 376 (15%) | 181 (15%) | 154 (15%) | 195 (14%) | 663 (15%) |
Given but route unknown | 455 (18%) | 233 (20%) | 199 (20%) | 222 (16%) | 815 (18%) |
Not given | 106 (4%) | 39 (3%) | 30 (3%) | 67 (5%) | 162 (4%) |
No record | 602 (24%) | 265 (23%) | 224 (22%) | 337 (25%) | 979 (22%) |
OR (95% CI) c | |||||
Intramuscular | 1.0 | 1.0 | 1.0 | 1.0 | — |
Oral | 1.09 (0.94–1.27) | 1.13 (0.92–1.38) | 1.11 (0.90–1.38) | 1.06 (0.87–1.29) | — |
Given but route unknown | 1.05 (0.91–1.22) | 1.19 (0.99–1.43) | 1.16 (0.95–1.41) | 0.95 (0.79–1.14) | — |
Not given | 1.24 (0.95–1.61) | 1.07 (0.74–1.55) | 0.98 (0.65–1.49) | 1.39 (1.03–1.90)* | — |
No record | 1.15 (1.01–1.31)* | 1.18 (0.99–1.41) | 1.19 (0.99–1.44) | 1.12 (0.95–1.32) | — |
