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. Author manuscript; available in PMC: 2020 Aug 1.
Published in final edited form as: J Am Med Dir Assoc. 2019 Feb 7;20(8):1007–1012.e2. doi: 10.1016/j.jamda.2018.12.017

APPENDIX Table 2.

Association between Nursing Home Advanced Practitioner Specialization and Regional Performance on Nursing Home Quality Measures: Subgroup Analysis

Quality Measures
HRR-level Variables Use of anti-psychotic medications (long-term) Use of anti-psychotic medications (short-term) Use of restraints Use of indwelling urinary catheters Residents with a urinary tract infection Residents with symptoms of depression
NH specialist APs per 1,000 beds 0.073 (−0.021 to 0.166) −0.001 (−0.020 to 0.019) 0.009 (−0.014 to 0.031) −0.008 (−0.028 to 0.013) −0.041* (−0.075 to −0.007) 0.159* (0.051 to 0.266)
Percent of NHs part of chain 0.008 (−0.003 to 0.020) −0.002 (−0.004 to 0.001) −0.006* (−0.009 to −0.003) −0.004* (−0.007 to −0.002) 0.002 (−0.002 to 0.007) −0.030* (−0.044 to −0.017)
Percent of NHs that are for-profit 0.002 (−0.012 to 0.016) −0.000 (−0.003 to 0.003) −0.000 (−0.003 to 0.003) 0.007* (0.004 to 0.011) 0.001 (−0.005 to 0.005) −0.040* (−0.056 to −0.024)
Percent of stays covered by Medicaid −0.022 (−0.057 to 0.011) −0.001 (−0.008 to 0.006) 0.022* (0.014 to 0.030) −0.034* (−0.041 to −0.027) −0.035* (−0.047 to −0.022) −0.039* (−0.078 to −0.001)
Percent of stays covered by Medicare −0.077* (−0.134 to −0.020) 0.008 (−0.004 to 0.020) 0.013 (−0.000 to 0.027) −0.024* (−0.037 to −0.011) −0.016 (−0.037 to 0.005) 0.016 (−0.050 to 0.081)
Average patient age in years −0.731* (−0.842 to −0.620) −0.055* (−0.078 to −0.032) −0.039* (−0.066 to −0.012) −0.044* (−0.068 to −0.019) −0.062* (−0.103 to −0.022) −0.652* (−0.780 to −0.525)
Percent of patients who are white 0.066* (0.047 to 0.086) −0.002 (−0.006 to 0.003) 0.006* (0.001 to 0.011) 0.015* (0.011 to 0.019) 0.027* (0.019 to 0.034) 0.059* (0.036 to 0.082)
Percent of patients who are female −0.100* (−0.179 to −0.021) 0.009 (−0.008 to 0.025) 0.041* (0.022 to 0.060) −0.011 (−0.028 to 0.007) 0.086* (0.057 to 0.115) −0.090 (−0.181 to 0.001)
RN to total staffing ratio −0.087* (−0.103 to −0.070) −0.021* (−0.025 to −0.018) −0.008* (−0.012 to −0.004) 0.002 (−0.001 to 0.006) −0.018* (−0.024 to −0.012) 0.085* (0.066 to 0.104)
Direct care staff hours per patient day −3.503* (−4.140 to −2.866) −0.746* (−0.879 to −0.613) 0.208* (0.055 to 0.362) 0.006 (−0.135 to 0.147) −0.318* (−0.550 to −0.085) −4.786* (−5.518 to −4.053)
Percent of NHs with APPs (e.g., NPs) 0.006 (−0.006 to 0.018) 0.004* (0.001 to 0.006) 0.002 (−0.001 to 0.005) −0.009* (−0.011 to −0.006) 0.005* (0.001 to 0.009) 0.004 (−0.010 to 0.017)
Average patient acuity index −0.449* (−0.892 to −0.006) 0.097* (0.005 to 0.189) 0.249* (0.142 to 0.356) 0.016 (−0.082 to 0.114) 0.433* (0.271 to 0.595) −0.109 (−0.619 to 0.400)
Herfindahl-Hirschman Index of NHs in HRR 2.443 (−3.407 to 8.294) −0.490 (−1.710 to 0.731) 2.175* (0.766 to 3.584) 2.084* (0.785 to 3.383) 0.793 (−1.344 to 2.931) −2.608 (−9.337 to 4.120)
Year: 2014 −1.771* (−2.284 to −1.257) −0.202* (−0.309 to −0.095) −0.452* (−0.576 to −0.328) −0.369* (−0.483 to −0.255) −0.766* (−0.954 to −0.579) −0.287 (−0.878 to 0.303)
Year: 2015 −2.985* (−3.510 to −2.460) −0.336* (−0.446 to −0.227) −0.714* (−0.841 to −0.588) −0.379* (−0.496 to −0.263) −1.190* (−1.382 to −0.999) −0.844* (−1.448 to −0.240)
Year: 2016 −4.901* (−5.443 to −4.360) −0.525* (−0.638 to −0.412) −0.942* (−1.073 to −0.812) −0.710* (−0.830 to −0.590) −1.974* (−2.172 to −1.776) −1.332* (−1.955 to −0.709)
*

p-value < 0.05