Skip to main content

Table 3 Comparison of self-reported cigarette smoking between PMRP and PhenX

From: Validation of PhenX measures in the personalized medicine research project for use in gene/environment studies

PMRP PhenX
Smoked at least 100 cigarettes in entire life
  No Yes Combined
  N (%) N (%) N (%)
No 1151 (52.1) 16 (0.7) 1167 (52.9)
Yes 88 (4.0) 953 (53.2) 1041 (47.1)
Combined 1239 (56.1) 969 (43.9) 2208 (100.0)
Kappa = 0.905 (95% CL=0.887, 0.923)
Frequency of current smoking PMRP enrollment and PhenX follow-up
  Every day Some days Not at all Combined
  N (%) N (%) N (%) N (%)
Every day 60 (2.7) 12 (0.5) 39 (1.8) 111 (5.0)
Some days 8 (0.4) 10 (0.5) 23 (1.0) 41 (1.9)
Not at all 13 (0.6) 9 (0.4) 2027 (92.1) 2049 (100.0)
Combined 81 (3.7) 31 (1.4) 2089 (94.9) 2201 (100.0)
Kappa = 0.673 (0.604, 0.741)
  1. The numbers are the actual counts (and percent) of people responding “yes” or “no” on the two questionnaires about whether they had ever smoked 100 cigarettes in their lifetime and whether they were currently smoking. Agreement (no/no or yes/yes) is noted in bold.