Table 3 Distribution of cases and controls, associated odds ratios (OR) and 95% confidence intervals (CI) by vitamin K status for subjects aged 12–71 months
From: Vitamin K and childhood cancer: a report from the United Kingdom Childhood Cancer Study
Leukaemia | |||||
|---|---|---|---|---|---|
Vitamin K status | All cancers | Total | ALL a | Other cancers b | Controls |
Number (%) | |||||
Intramuscular | 531 (40%) | 294 (40%) | 265 (40%) | 237 (40%) | 1037 (43%) |
Oral | 238 (18%) | 135 (18%) | 119 (18%) | 103 (17%) | 444 (19%) |
Given but route unknown | 266 (20%) | 148 (20%) | 134 (20%) | 118 (16%) | 461 (18%) |
Not given | 39 (3%) | 15 (2%) | 12 (2%) | 24 (4%) | 74 (3%) |
No record | 249 (19%) | 140 (19%) | 125 (19%) | 109 (18%) | 383 (16%) |
OR (95% CI)c | |||||
Intramuscular | 1.0 | 1.0 | 1.0 | 1.0 | — |
Oral | 1.06 (0.88–1.29) | 1.16 (0.88–1.42) | 1.10 (0.86–1.41) | 1.01 (0.78–1.32) | — |
Given but route unknown | 1.13 (0.93–1.36) | 1.12 (0.89–1.42) | 1.13 (0.88–1.44) | 1.14 (0.88–1.47) | — |
Not given | 1.04 (0.69–1.56) | 0.73 (0.41–1.30) | 0.66 (0.35–1.24) | 1.43 (0.87–2.32) | — |
No record | 1.28 (1.06–1.56)* | 1.29 (1.02–1.64)* | 1.28 (1.00–1.64)* | 1.27 (0.98–1.65) | — |
