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Table 4 Carbon footprint reductions for secondary care for the TC group per patient per year, adjusted for baseline year and controls

From: Evaluating sustainability: a retrospective cohort analysis of the Oxfordshire therapeutic community

Type of secondary care Variable Mean carbon footprint difference between groups adjusted for carbon footprint in baseline year (95 % CI); P value
Over 1 year Over 2 years Over 3 years
Physical health care Secondary care appt (physical) 3 kgCO2e (−73, 79)
p = 0.94
2 kgCO2e (−61, 64)
p = 0.96
−9 kgCO2e (−73, 55)
p = 0.77
Physical inpt days 84 kgCO2e (−1, 170)
p = 0.05
58 kgCO2e (5, 112)
p = 0.03*
122 kgCO2e (−36, 280)
p = 0.13
A&E attendance 47 kgCO2e (3, 90)
p = 0.04*
32 kgCO2e (−10, 74)
p = 0.14
32 kgCO2e (−9, 72)
p = 0.12
Mental health care Secondary care appt (mental) 298 kgCO2e (−5, 602)
p = 0.05
235 kgCO2e (−19, 489)
p = 0.07
233 kgCO2e (−24, 489)
p = 0.08
Crisis appts 83 kgCO2e (3, 163)
p = 0.04*
61 kgCO2e (6, 116)
p = 0.03*
61 kgCO2e (−7, 128)
p = 0.08
Mental inpt days 353 kgCO2e
(−185, 892) p = 0.20
292 kgCO2e
(−260, 844) p = 0.30
364 kgCO2e
(−194, 922) p = 0.20
TC service −639 kgCO2e −320 kgCO2e −213 kgCO2e
Total secondary health care 229 kgCO2e
p = 0.03*
359 kgCO2e
p = 0.08
590 kgCO2e
p = 0.04*
  1. Positive values indicate savings in favour of the TC group
  2. * significant at 5 % level