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Table 1 Screening rates by treatment arms in first year

From: Physician versus non-physician delivery of alcohol screening, brief intervention and referral to treatment in adult primary care: the ADVISe cluster randomized controlled implementation trial

  Average unique visits per month Average screens per month Average % screened p value Best month N screened Best month % screened p value 
PCP NPP & MA Control PCP NPP & MA Control PCP NPP & MA Control PCP NPP &MA Control PCP NPP & MA Control
Medical center
 1 1464 2797 2928 41 1107 148 2.80 39.56 5.07 a,b,c 161 1505 391 11.47 46.88 13.81 a,b’,c
 2 1088 1424 1392 51 824 24 4.67 57.84 1.73 a,b,c 102 1039 68 9.31 66.65 5.00 a, b,c
 3 925 748 1779 58 197 403 6.28 26.33 22.64 a,b,c 126 467 697 13.15 55.12 35.49 a,b,c
 4 4318 4536 1639 552 2962 4 12.77 65.29 0.26 a,b,c 861 3681 23 19.79 71.71 1.18 a,b,c
 5 1569 884 1717 509 411 107 32.43 46.51 6.22 a,b,c 635 723 235 37.90 64.21 14.61 a,b,c
 6 3124 7668 3372 177 3705 29 5.68 48.32 0.85 a,b,c 332 5644 63 10.15 74.68 2.02 a,b,c
 7 3336 2452 1898 339 225 6 10.17 9.16 0.33 a,b,c 980 636 25 26.04 29.42 1.49 a,b,c’
 8 3866 4067 5686 565 2778 167 14.62 68.32 2.94 a,b,c 964 3355 350 28.41 75.48 5.81 a,b,c
 9 5111 955 2531 405 142 8 7.92 14.86 0.33 a,b,c 608 254 41 12.36 31.59 1.76 a,b,c
 10 4297 5034 6031 345 2827 79 8.03 56.17 1.32 a,b,c 637 3938 195 15.07 73.16 3.39 a,b,c
 11 6636 3715 3125 239 2223 138 3.60 59.85 4.41 a,b,c 355 2586 443 5.04 70.78 15.08 a,b,c
All 35,519 34,167 31935 3280 17397 1113 9.23 50.92 3.49 a,b,c 3,729 20,445 1918 10.68 60.07 6.04 a,b,c
  1. Differences in screening rates between each of the two intervention arms vs. Control arm as well as between the two intervention arms were examined by hand calculating z statistics for comparisons of two proportions
  2. ap<0.0001, NPP & MA vs. Control; bp<0.0001, PCP vs. Control; b’p<0.05, PCP vs. Control; cp<0.0001, NPP & MA vs. PCP; c’p<0.01, NPP & MA vs. PCP