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Table 3 Comparison of information seeking between federal poverty limit <300 and federal poverty limit >300 in the original and follow-up surveys (%)

From: Reliability of a patient survey assessing cost-related changes in health care use among high deductible health plan enrollees

  Original (n = 387)† Follow-up (n = 387) Pvalues‡
Plan use and information-seeking FPL < 300% FPL ≥ 300% Pvalue* FPL < 300% FPL ≥ 300% Pvalue* FPL < 300 Between Original and Follow-up FPL ≥ 300 Between Original and Follow-up
Unprotected from OOP expenses 55.8 44.0 0.043 60.8 40.2 <0.001 0.553 0.577
Plan difficult to understand 24.8 26.1 0.886 30.8 25.0 0.290 0.392 0.859
Unexpected costs since joining plan 46.2 41.2 0.425 47.1 49.2 0.789 0.269 0.183
Am I required to pay? 50.0 51.6 0.860 50.4 53.2 0.695 1.000 0.439
How much am I required to pay? 40.8 39.8 0.945 43.3 41.7 0.854 0.841 0.722
  1. The p-values in columns 3 and 6 represent the observed type-1 error (α) for tests comparing income groups whereas the p-values in columns 7 and 8 are the observed α for tests comparing the original and follow-up surveys.
  2. *P values are for chi-square tests between income groups within survey
  3. † We restricted the original survey data to follow-up respondents
  4. ‡ P values are for McNemar tests within income groups and between surveys