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Table 3 Difference-in-difference analysis on patients presenting to NHS hospital trusts with alcohol teams compared to NHS hospital trusts without - Estimated intervention effects for emergency hospital activity in the year before and the year after diagnosis (as mean per patient)

From: The impact of alcohol care teams on emergency secondary care use following a diagnosis of alcoholic liver disease - a national cohort study

  Hospital trusts with an alcohol team (n = 4768) Hospital trusts with no alcohol team (n = 4397)   
One year before diagnosis (SD) One year after diagnosis (SD) Difference (SE) One year before diagnosis (SD) One year after diagnosis (SD) Difference (SE) Difference in difference (95 % CI) P-value
Emergency admissions (all) 1.666 (1.69) 1.349 (2.31) −0.318 (0.032) 1.691 (1.92) 1.353 (2.37) −0.338 (0.033) 0.020 (−0.070, 0.111) 0.656
Emergency admissions (alcohol related) 1.301 (1.37) 1.074 (2.01) −0.227 (0.028) 1.283 (1.49) 1.081 (2.04) −0.202 (0.029) −0.025 (−0.104, 0.054) 0.536
Emergency department attendances (all) 1.437 (3.08) 1.620 (4.72) 0.182 (0.046) 1.117 (2.43) 1.257 (3.31) 0.140 (0.047) 0.042 (−0.087, 0.171) 0.521
  1. Data are mean number per patient (standard deviation) and difference (standard error). P-value is from the linear mixed model. CI confidence interval
  2. Note: The ‘one year before diagnosis’ field includes the index admission which accounts for the mean number of emergency admissions being above one in this time period