Outcomes and covariates for intervention and control, preintervention and postintervention (unweighted)
| Preintervention | Postintervention | |||||||||
| Intervention | Control | (1–2) | Intervention | Control | (1–2) | |||||
| N/(clusters) | % or Mean/(SD) | N/(clusters) | % or Mean/(SD) | Diff. | N/(clusters) | % or Mean/(SD) | N/(clusters) | % or Mean/(SD) | Diff. | |
| Covariates | ||||||||||
| Percent male (%) | 5116 (4497) | 49.75 | 17 338 (15 053) | 44.85 | 4.90*** | 9341 (7811) | 48.24 | 25 748 (21 938) | 44.91 | 3.33*** |
| Percent White British (%) | 4359 (3784) | 84.06 | 15 674 (13 536) | 91.31 | −7.25*** | 6518 (5257) | 81.74 | 21 014 (17 641) | 88.54 | −6.79*** |
| Mean deprivation (Ward index of multiple deprivation) | 5116 (4497) | 10.78 (7.32) | 17 338 (15 053) | 13.64 (8.82) | −2.86*** | 9341 (7811) | 10.90 (7.99) | 25 748 (21 938) | 13.47 (8.94) | −2.57*** |
| Mean age at referral received | 5116 (4497) | 12.70 (3.97) | 17 338 (15 053) | 13.13 (5.49) | −0.43*** | 9341 (7811) | 12.49 (4.30) | 25 748 (21 938) | 13.16 (5.43) | −0.66*** |
| Outcomes | ||||||||||
| Rate of new patients per month | 36 (1) | 1.05 (0.00) | 72 (2) | 1.24 (1.92) | −0.20 | 45 (1) | 1.22 (0.00) | 90 (2) | 1.24 (2.64) | −0.02 |
| Waiting time: first contact | 4803 (4253) | 39.49 (43.81) | 16 608 (14 528) | 41.20 (48.78) | −1.71** | 8765 (7450) | 38.95 (51.25) | 24 274 (20 859) | 60.86 (66.63) | −21.91*** |
| Waiting time: second contact | 3985 (3611) | 27.46 (36.06) | 14 029 (12 563) | 23.08 (32.32) | 4.38*** | 6677 (5871) | 34.88 (44.18) | 18 969 (16 836) | 26.54 (35.78) | 8.33*** |
| Attended contacts per spell | 5116 (4497) | 16.97 (33.44) | 17 337 (15 052) | 15.78 (31.51) | 1.19** | 8630 (7204) | 10.23 (15.67) | 25 283 (21 508) | 10.41 (19.20) | −0.18 |
| Rereferral rate | 5116 (4497) | 0.35 (0.48) | 17 338 (15 053) | 0.32 (0.48) | 0.03*** | 9341 (7811) | 0.17(0.37) | 25 748 (21 938) | 0.16 (0.36) | 0.02*** |
| Health outcomes: RCADS | Not available | 2323 (1552) | 53.89 (38.01) | 4154 (2703) | 58.53 (40.12) | −4.64*** | ||||
| Health outcomes: SDQ | Not available | 1227 (799) | 40.68 (13.39) | 3171 (1951) | 41.85 (13.26) | −1.16*** | ||||
The column (1–2) displays the differences across the groups. ***, ** and * indicate significance at the 1%, 5% and 10% critical level, tested using a t-test for continuous data and a χ2 test for categorical variables. SEs are clustered at the patient or service level (service level includes all three sites in the study: Buckinghamshire, Oxford, SWBaNES).
RCADS, Revised Child Anxiety and Depression Scale ; SDQ, Strengths and Difficulties Questionnaire.