TREATMENT dose diet | Author, year (click name for abstract) | No. tumor bearing rats Controls | Total no. of rats Controls | No. tumor bearing rats Treated | Total no. of rats Treated | RR | p | Potency on tumor incidence | Tumor percent inhibition | Protocol | Ro- dents | Carcinogen N x dose | weeks |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
B-carotene 1% | Colacchio 86 | 27 | 28 | 28 | 28 | 1.04 | NS | 0.96 | -4 | both | Rh' | dmh 16x30 | 20 |
B-carotene 22 ppm vs 2 | Temple 87 | 23 | 31 | 12 | 32 | 0.50 | * | 2.00 | 50 | both | Ms" | dmh 7x28 | 31 |
B-carotene 0.2% | Imaida 90 | 9 | 20 | 3 | 15 | 0.44 | NS | 2.25 | 56 | post | Rf' | dmh 3x40 | 52 |
B-carotene 50 ppm | Yamamot. 94 | 23 | 30 | 11 | 20 | 0.72 | NS | 1.39 | 28 | both | Rs' | dmh 12x20 | 26 |
Z | p | 95%CI low | 95%CI high | ||||||||||
Z Total / meta RR & p | 82 | 109 | 54 | 95 | 0.76 | 0.006 | 0.61 | 0.93 |
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