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Table 2 Layered cross-tabulation for the effect of ethnicity on the percent of respondents who currently experience the pain symptoms that were significant by ethnicity

From: Perspectives on the impact of painful diabetic peripheral neuropathy in a multicultural population

Strata p-value
  Stabbing pain Shooting pain Electric shock-like pain Pain and discomfort at night Burning pain Sensitivity to touch
Controlling for age
 18–34 years < 0.0001 < 0.0001 0.002 NS 0.001 0.004
 35–54 years < 0.0001 < 0.0001 < 0.0001 < 0.001 < 0.0001 0.001
  ≥ 55 years NS NS NS NS NS NS
Controlling for education
 Less than high school 0.002 0.034 NS 0.021 NS NS
 High school < 0.0001 < 0.0001 0.006 < 0.0001 <0.0001 NS
 Some college – no degree < 0.0001 0.003 0.007 NS NS 0.004
 Associate’s degree NS 0.024 NS NS NS NS
 Bachelor’s degree NS NS NS NS NS NS
 Post-graduate degree 0.009 0.031 NS NS 0.024 0.007
Controlling for income
  < $25,000 0.006 NS NS NS NS NS
 $25,000 - $34,999 < 0.0001 < 0.0001 0.002 NS NS 0.004
 $35,000 - $49,999 < 0.0001 < 0.0001 0.009 0.005 0.006 NS
 $50,000 - $74,999 0.006 0.014 0.018 NS NS NS
 $75,000 - $99,999 NS 0.001 0.013 NS NS NS
 $100,000 - $149,999 0.004 NS 0.028 NS 0.001 0.036
  ≥ $150,000 0.007 NS NS NS NS NS
  1. Abbreviations: NS not significant