Table 1.
The statistics of variation in the administrative units (districts) and the new areal units
| EQ |
IDR |
CV |
SCV |
|||||
|---|---|---|---|---|---|---|---|---|
| Districts | New areal units | Districts | New areal units | Districts | New areal units | Districts | New areal units | |
| CABG | 21.75 | 5.53 | 3.12 | 1.97 | 0.52 | 0.30 | 4.2 | 4.7 |
| PTCA | 3.63 | 2.50 | 1.69 | 1.55 | 0.22 | 0.20 | 3.8 | 4.0 |
| HIP | 3.45 | 1.92 | 1.58 | 1.43 | 0.20 | 0.14 | 2.6 | 1.6 |
| KNEE | 3.92 | 2.56 | 2.04 | 1.73 | 0.27 | 0.22 | 11.9 | 5.5 |
| HYS | 3.54 | 2.53 | 1.63 | 1.48 | 0.20 | 0.17 | 2.1 | 2.8 |
| CSEC | 2.97 | 1.70 | 1.49 | 1.39 | 0.16 | 0.13 | 2.5 | 1.9 |
| CT | 2.06 | 1.48 | 1.31 | 1.25 | 0.12 | 0.09 | 1.9 | 1.1 |
| MRI | 2.81 | 2.31 | 1.37 | 1.34 | 0.16 | 0.16 | 2.3 | 2.5 |
EQ, extremal quotient; IDR, inter-decile ratio; CV, coefficient of variation; SCV, systematic component of variation; CABG, coronary artery bypass graft surgery; PTCA, percutaneous transluminal coronary angioplasty; HIP, surgery after hip fracture; KNEE, knee-replacement surgery; HYS, hysterectomy; CSEC, caesarean section; CT, computed tomography scan; MRI, magnetic resonance image scan.