Table 5
Pre- versus post-intervention odd ratios for selected health services for LBP between the control and intervention groups during the 6 months after an index visit overall and by risk subgroup
| All study enrollees | ||||||||
|---|---|---|---|---|---|---|---|---|
| Pre-intervention period | Post-intervention period | OR | 95% CI | |||||
| N | Prop | 95% CI | N | Prop | 95% CI | |||
| Any PT visits | ||||||||
| Low risk | ||||||||
| Control | 134 | 0.28 | (0.15, 0.40) | 258 | 0.26 | (0.16, 0.36) | 0.93 | (0.58, 1.48) |
| Intervention | 118 | 0.27 | (0.14, 0.40) | 187 | 0.31 | (0.19, 0.44) | 1.25 | (0.75, 2.08) |
| OR | 0.97 | (0.50, 1.86) | 1.30 | (0.76, 2.22) | 1.34 | (0.67, 2.68) | ||
| P value | 0.4 | |||||||
| Medium risk | ||||||||
| Control | 120 | 0.25 | (0.09, 0.41) | 227 | 0.32 | (0.15, 0.50) | 1.45 | (0.88, 2.39) |
| Intervention | 99 | 0.32 | (0.11, 0.53) | 187 | 0.34 | (0.15, 0.53) | 1.08 | (0.64, 1.83) |
| OR | 1.42 | (0.58, 3.49) | 1.06 | (0.48, 2.31) | 0.74 | (0.36, 1.53) | ||
| P value | 0.42 | |||||||
| High risk | ||||||||
| Control | 76 | 0.27 | (0.13, 0.41) | 129 | 0.26 | (0.16, 0.36) | 0.95 | (0.50, 1.82) |
| Intervention | 56 | 0.32 | (0.14, 0.49) | 108 | 0.36 | (0.22, 0.50) | 1.20 | (0.61, 2.40) |
| OR | 1.24 | (0.58, 2.67) | 1.57 | (0.90, 2.73) | 1.26 | (0.49, 3.25) | ||
| P value | 0.63 | |||||||
| Any CAM visits | ||||||||
| Low risk | ||||||||
| Control | 134 | 0.17 | (0.08, 0.26) | 258 | 0.13 | (0.08, 0.18) | 0.71 | (0.39, 1.31) |
| Intervention | 118 | 0.11 | (0.04, 0.17) | 187 | 0.14 | (0.08, 0.20) | 1.38 | (0.67, 2.84) |
| OR | 0.57 | (0.27, 1.23) | 1.11 | (0.62, 2.01) | 1.94 | (0.75, 5.01) | ||
| P value | 0.17 | |||||||
| Medium risk | ||||||||
| Control | 120 | 0.19 | (0.10, 0.28) | 227 | 0.17 | (0.11, 0.23) | 0.85 | (0.47, 1.55) |
| Intervention | 99 | 0.13 | (0.05, 0.21) | 187 | 0.11 | (0.06, 0.16) | 0.82 | (0.39, 1.76) |
| OR | 0.64 | (0.30, 1.37) | 0.61 | (0.34, 1.09) | 0.96 | (0.37, 2.52) | ||
| P value | 0.94 | |||||||
| High risk | ||||||||
| Control | 76 | 0.27 | (0.13, 0.41) | 129 | 0.26 | (0.16, 0.36) | 0.95 | (0.50, 1.82) |
| Intervention | 56 | 0.32 | (0.14, 0.49) | 108 | 0.36 | (0.22, 0.50) | 1.20 | (0.61, 2.40) |
| OR | 1.24 | (0.58, 2.67) | 1.57 | (0.90, 2.73) | 1.26 | (0.49, 3.25) | ||
| P value | 0.63 | |||||||
| Any LBP imaging | ||||||||
| Low risk | ||||||||
| Control | 134 | 0.16 | (0.00, 0.32) | 258 | 0.20 | (0.02, 0.39) | 1.30 | (0.70, 2.44) |
| Intervention | 118 | 0.25 | (0.01, 0.49) | 187 | 0.18 | (0.01, 0.35) | 0.65 | (0.37, 1.15) |
| OR | 1.74 | (0.44, 6.91) | 0.86 | (0.23, 3.20) | 0.50 | (0.21, 1.16) | ||
| P value | 0.11 | |||||||
| Medium risk | ||||||||
| Control | 120 | 0.25 | (0.07, 0.44) | 227 | 0.16 | (0.05, 0.28) | 0.57 | (0.33, 1.00) |
| Intervention | 99 | 0.25 | (0.06, 0.44) | 187 | 0.28 | (0.09, 0.47) | 1.19 | (0.68, 2.08) |
| OR | 0.98 | (0.34, 2.83) | 2.03 | (0.76, 5.40) | 2.07 | (0.94, 4.57) | ||
| P value | 0.07 | |||||||
| High risk | ||||||||
| Control | 76 | 0.34 | (0.17, 0.52) | 129 | 0.34 | (0.20, 0.47) | 0.96 | (0.53, 1.77) |
| Intervention | 56 | 0.29 | (0.11, 0.47) | 108 | 0.30 | (0.17, 0.44) | 1.06 | (0.52, 2.17) |
| OR | 0.79 | (0.36, 1.76) | 0.87 | (0.47, 1.59) | 1.10 | (0.43, 2.80) | ||
| P value | 0.85 | |||||||
| Any narcotic Rx | ||||||||
| Low risk | ||||||||
| Control | 134 | 0.28 | (0.16, 0.41) | 258 | 0.23 | (0.16, 0.31) | 0.76 | (0.46, 1.27) |
| Intervention | 118 | 0.34 | (0.19, 0.48) | 187 | 0.24 | (0.15, 0.33) | 0.62 | (0.36, 1.08) |
| OR | 1.29 | (0.71, 2.33) | 1.06 | (0.65, 1.73) | 0.82 | (0.39, 1.73) | ||
| P value | 0.61 | |||||||
| Medium risk | ||||||||
| Control | 120 | 0.56 | (0.34, 0.78) | 227 | 0.47 | (0.34, 0.61) | 0.70 | (0.43, 1.13) |
| Intervention | 99 | 0.48 | (0.27, 0.68) | 187 | 0.48 | (0.33, 0.63) | 1.00 | (0.59, 1.70) |
| OR | 0.71 | (0.40, 1.27) | 1.02 | (0.67, 1.56) | 1.43 | (0.70, 2.92) | ||
| P value | 0.33 | |||||||
| High risk | ||||||||
| Control | 76 | 0.72 | (0.33, 1.11) | 129 | 0.67 | (0.39, 0.95) | 0.81 | (0.42, 1.55) |
| Intervention | 56 | 0.66 | (0.26, 1.05) | 108 | 0.61 | (0.33, 0.88) | 0.81 | (0.40, 1.64) |
| OR | 0.74 | (0.33, 1.68) | 0.74 | (0.40, 1.39) | 1.00 | (0.38, 2.61) | ||
| P value | 1.00 | |||||||