Group Lowincome Middleincome Highincome
Number Percent Number Percent Number Percent
GroupI 2 4.4 12 26.7 31 68.9
GroupII 0 0 5 11.6 38 88.4
GroupIII 1 2.2 2 4.3 43 93.5
Table 4: Percentage distribution of subjects on the basis of monthly family income.