Table 3.

Summary statistics for models of concurrent and next week skin damage using sub-epidermal moisture measures by anatomic site

Adjusted*
Relative Risk Ratio (95% CI)
Anatomic site by Time of Visual Skin Assessment	None vs Erythema	None or Erythema vs St 1 PU	None, Erythema, or St 1 PU vs St 2+ PU
Sacral
Concurrent	1.02 (0.99–1.04)	1.03 (1.00–1.06)	N/A	22.84 (0.009)
Next week	N/A	1.03 (0.99–1.06)	1.03 (1.00–1.07)	56.37 (0.009)
Left Ischial
Concurrent	1.00 (0.97–1.02)	1.04 (1.00–1.08)	N/A	19.39 (0.003)
Next week	N/A	1.03 (0.98–1.09)	0.91 (0.84–0.98)	54.56 (0.0001)
Right Ischial
Concurrent	0.97 (0.94–0.99)	1.03 (0.97–1.08)	N/A	15.81 (0.014)
Next week	N/A	1.00 (0.95–1.06)	1.09 (1.05–1.13)	33.14 (0.0001)

^*Models adjusted for Braden score and age in sacral models and age and functional status in ischial models. Only Braden score significant in sacral models; all other covariates not significant.

Note. PU=Pressure Ulcer, CI=Confidence Interval, BIC=Bayesian Information Criterion.