Primary study · included by 1 review

A population-based case-control investigation on cancers of the oral cavity in Bangalore, India.

Nandakumar 1990 · Nandakumar A, Thimmasetty K T, Sreeramareddy N M, et al. · British journal of cancer · 1990

Included by

Outcome this study informsPooled effectEvidenceCertainty
Oral cancer risk
Smoking frequency (units of tobacco smoked per day) vs Never users (reference)
RR 2.19 [1.75, 2.74]27 studiesGRADE not reported
Oral cancer risk
Smoking frequency (units of tobacco smoked per day) vs Never users (reference)
RR 4.54 [2.74, 7.54]27 studiesGRADE not reported
Oral cancer risk
Smoking duration (years) vs Never users (reference)
RR 2.11 [1.60, 2.79]22 studiesGRADE not reported
Oral cancer risk
Smoking duration (years) vs Never users (reference)
RR 2.19 [1.48, 3.23]22 studiesGRADE not reported
Oral cancer risk
Smoking frequency (units of tobacco smoked per day) vs Never users (reference)
RR 4.98 [3.49, 7.13]27 studiesGRADE not reported
Oral cancer risk
Smoking frequency (units of tobacco smoked per day) vs Never users (reference)
RR 3.84 [2.41, 6.13]27 studiesGRADE not reported
Oral cancer risk
Smoking duration (years) vs Never users (reference)
RR 0.47 [0.26, 0.84]22 studiesGRADE not reported
Oral cancer risk
Smoking duration (years) vs Never users (reference)
RR 2.16 [0.79, 5.90]22 studiesGRADE not reported
Oral cancer risk
Smoking duration (years) vs Never users (reference)
RR 0.64 [0.44, 0.94]22 studiesGRADE not reported
Oral cancer risk
Smoking frequency (units of tobacco smoked per day) vs Never users (reference)
RR 5.98 [3.37, 10.60]27 studiesGRADE not reported
Oral cancer risk
Smoking frequency (units of tobacco smoked per day) vs Never users (reference)
RR 1.46 [1.01, 2.10]27 studiesGRADE not reported
Oral cancer risk
Smoking duration (years) vs Never users (reference)
RR 1.56 [1.08, 2.25]22 studiesGRADE not reported
Oral cancer risk
Smoking duration (years) vs Never users (reference)
RR 0.88 [0.69, 1.12]22 studiesGRADE not reported
Oral cancer risk
Smoking frequency (units of tobacco smoked per day) vs Never users (reference)
RR 0.97 [0.53, 1.60]27 studiesGRADE not reported

1 including review in total.