Table IV.
Number of follicular lymphoma and DLBCL non-Hodgkin lymphoma cases and controls and odds ratios according to hair coloring product use before 1980, by type, color, and tone (women only).
| Follicular lymphoma | DLBCL | |||||||
|---|---|---|---|---|---|---|---|---|
| Hair coloring product use | Controls | Cases | ORa (95% CI) | Cases | ORa (95% CI) | Pb | ||
| None | 98 | 24 | 1.0 (referent) | 3 | 1.0 (referent) | |||
| 4 | ||||||||
| Any | 260 | 90 | 1.5 (0.9,2.6) | 9 | 1.0 (0.6,1.6) | 0.172 | ||
| 0 | ||||||||
| Permanent dye (any) | 123 | 49 | 1.9 (1.0,3.4) | 4 | 0.9 (0.5,1.6) | 0.045 | ||
| 2 | ||||||||
| Permanent, dark colors (black, brown, red) | 76 | 28 | 1.8 (0.9,3.4) | 2 | 0.9 (0.5,1.7) | 0.100 | ||
| 5 | ||||||||
| Permanent, intense tones (black, dark brown, dark blonde) | 36 | 17 | 2.0 (0.9,4.4) | 1 | 1.1 (0.5,2.4) | 0.209 | ||
| 6 | ||||||||
a
Odds ratio (95% CI), adjusted for age, race, and SEER area.
b
P-value for difference between risk estimates for follicular lymphoma and DLBCL.