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Table 6 Agreement between reported use of skin care products in 2003 and 2011. The NOWAC study, 2003–2011, Tromsø, Norway

From: Characterization of heavy users of skin care products among Norwegian women from 2003 to 2011

  Number PA (%)c PA±1 (%)d κw (95% CI)e
Body lotiona 8485 44.4 75.0 0.52 (0.51–0.53)
Hand creama 8408 40.6 70.9 0.51 (0.50–0.51)
Facial creama 8740 66.6 90.3 0.59 (0.58–0.61)
User statusb 8484 59.9 91.5 0.52 (0.51–0.53)
  1. aNever/seldom, 1–3 times per month, once a week, 2–4 times per week, 5–6 times per week, 1 time/day and 2 or more times/day
  2. bNone, light, moderate, frequent, heavy
  3. cPercentage of agreement on the diagonal
  4. dPercentage of agreement on the diagonal ± 1 category
  5. eWeighted kappa with 95% confidence interval (CI)