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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