Table 2

Demographic information on cases and controls

Leukemias (n = 1184)NHLs (n = 234)Solid tumors (n = 940)Controls (n = 2588)
n%n%n%n%
Sex
 Female48741.16025.642044.7108441.9
 Male69758.917474.452055.3150458.1
Age
 0–18 mo1069.031.319420.633312.9
 1.5–4 yr60250.85623.929931.8102639.6
 5–9 yr32927.89540.626528.276829.7
 10–14 yr14712.48034.218219.446117.8
Degree of urbanization
 Urban42736.18938.038040.4100538.8
 Mixed42435.88235.029531.487233.7
 Rural33328.16326.926528.271127.5
Parental education
 Elementary school41236.88439.428432.013429.8
 Secondary school33730.16831.930534.482533.6
 Grammar school37133.16128.629933.789936.6
 Missing642152134
Monthly family income
 <DM 2000888.1157.2697.91285.5
 DM 2000–400065259.911655.848154.9124653.2
 DM 4000–600027024.84722.624027.470930.3
 DM 6000–8000474.3178.2546.21687.2
 >DM 8000322.9136.3333.8913.9
 Missing952663246
SES
 High28924.46025.624125.674828.9
 Other89575.617474.469974.4184071.1