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Table 1 Baseline and clinical characteristics by study

From: Item response theory analysis and properties of decisional conflict scales: findings from two multi-site trials of men with localized prostate cancer

  Study
P3P-I (n = 494) P3P –II (n = 392)
N Percent N Percent
Age
  < 60 years 159 32.2 125 31.9
  > 60 years 335 67.8 267 68.1
Education
  > High school 280 56.9 310 79.1
  ≤ High school 214 43.3 77 19.6
 Missing/Unknown 0 0 5 1.3
Marital/partner status
 Married/partnered 378 76.5 280 71.4
 Not married/partnered 115 23.3 109 27.8
 Missing/unknown 1 0.2 3 0.8
Race
 Black 67 13.6 113 28.8
 White Hispanic 7 1.4 12 3.1
 White non-Hispanic 400 81.0 240 61.2
 Others 20 4.1 27 6.9
Working Status
 Not working 2 0.4 162 41.3
 Working 273 55.3 225 57.4
 Missing/unknown 219 44.4 5 1.3
Income
  < 39,999 (35,000a) 110 22.2 97 24.7
  > 39,999 (35,000a)   73.7 258 65.8
 Missing/Unknown 20 4 37 9.4
Web as an information source
 No 153 31.0 76 19.4
 Yes 341 69.0 282 71.9
 Missing/Unknown 0 0 34 8.7
D’Amico risk classification
 High    60 15.3
 Intermediate    194 49.5
 Low    135 34.4
 Missing/unknown    3 0.8
  1. aAn income threshold of 35,000 was used in P3P-I