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Table 3 Population, incentive and control group respondent characteristics

From: Improving response rate and quality of survey data with a scratch lottery ticket incentive

Variabels Population (aged 21–60) Pre-reminder Total
   Mean p-value Mean p-value
   Incentive group Control group Incentive vs control group Incentive group Control group incentive vs control group
Gender 1.51 1.44 1.39 0.174 1.47 1.43 0.160
Age 40.89 42.69 43.37 0.313 42.61 42.88 0.643
Education level 2 0.23 0.15 0.10 0.024 0.15 0.11 0.015
  1. 1 Gender: 1 = woman, 2 = man. 2 Education level: 1 = primary school, 0 = other.