NHS costs (£, mean (SD)) derived from computer records at participating general practices at 3 months follow-up
| Usual care alone (n=26) | Internet intervention plus usual care (n=28) | Internet intervention plus physiotherapist support (n=25) | All (excluding intervention costs) (n=79) | |
| Intervention costs | 0 | 12.5 | 50.5 | |
| All NHS costs | ||||
| Primary care costs* | 96 (142) | 85 (114) | 108 (136) | 96 (130) |
| Secondary care—A&E | – | 14 (42) | 11 (53) | 8 (39) |
| Secondary care—O/P | 116 (279) | 48 (83) | 87 (106) | 83 (178) |
| Secondary care—inpatient | 59 (299) | 129 (564) | 101 (391) | 97 (432) |
| Secondary care—total | 175 (490) | 191 (586) | 198 (483) | 188 (517) |
| Total costs | 271 (492) | 289 (650) | 357 (553) | 284 (564) |
| Back pain costs only | ||||
| Primary care costs—back pain only | 15 (40) | 30 (73) | 35 (75) | 26 (64) |
| Secondary care—A&E | – | – | 11 (53) | 3 (30) |
| Secondary care—O/P | 76 (251) | 25 (62) | 32 (69) | 44 (153) |
| Secondary care—inpatient | 26 (132) | 24 (129) | 101 (391) | 49 (244) |
| Secondary care—total | 102 (325) | 50 (158) | 143 (482) | 96 (340) |
| Total costs—back pain only | 116 (327) | 92 (178) | 228 (535) | 123 (367) |
*Primary care costs refer to GP consultations (at the surgery/home/phone); practice nurse consultations (at the surgery/home/phone); use of other person in surgery (mainly phlebotomist); any other primary care-related costs (walk in centre or phlebotomist) and costs of back pain relevant prescribing.