Table 4.
Associations among total hip replacement indicators within the years 2008 and 2009
| quality indicator number | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| qi3aa | qi3b | qi3c | qi3e | qi6 | qi3d | qi2b | qi4b | qi5b | qi5c | qi5d | |||
| CHI-SQUARE TEST | |||||||||||||
| Quality indicator number | Quality Indicator Name (indicator type) |
Year | |||||||||||
| qi3a | Complication register (Sb) | 2008 | |||||||||||
| 2009 | |||||||||||||
| qi3b | Appointment within 6 weeks (S) | 2008 | \ | ||||||||||
| 2009 |
19.97
(0.00)c |
||||||||||||
| qi3c | Orthopaedic register form (S) | 2008 | 0.57 (0.45) |
\ | |||||||||
| 2009 | 0.43 (0.51) |
0.09 (0.77) |
|||||||||||
| qi3e | Improvement plan (S) | 2008 | 0.29 (0.59) |
\ | 0.13 (0.71) |
||||||||
| 2009 | 0.28 (0.60) |
4.38 (1.00) |
0.13 (0.71) |
||||||||||
| qi6 | Countrywide implementation (S) |
2008 | 1.41 (0.24) |
\ | 0.20 (0.66) |
0.10 (0.75) |
|||||||
| 2009 | 0.43 (0.51) |
0.09 (0.77) |
0.18 (0.67) |
0.13 (0.71) |
|||||||||
| INDEPENDENT T-TEST | SPEARMAN CORRELATION COEFFICIENT | ||||||||||||
| qi3d | Complication meeting (S) | 2008 | yes 11 | \ | yes 10.5 | yes 11 | yes 10.8 | ||||||
| no 8.2 (0.41) d,e |
no 13 (0.81) |
no 0
(0.01) |
no 8.0 (0.73) |
||||||||||
| 2009 | yes 11.3 | yes 11.4 | yes 11.7 | yes 11.7 | yes 11.6 | ||||||||
| no 13.1 (0.86) |
no 12 (0.98) |
no 4.5 (0.19) |
no 4.7 (0.19) |
no 7 (0.74) |
|||||||||
| qi2b | Thrombosis prophylaxis (P) | 2008 | yes 99.9 | \ | yes 60 | yes 99.9 | yes 99.9 | 0.09 (0.50)f |
|||||
| no 100 (0.73) |
no 100 (0.80) |
no 100 (0.86) |
no 100 (0.83) |
||||||||||
| 2009 | yes 99.9 | yes 99.8 | yes 99.8 | yes 99.8 | yes 99.8 |
0.21
(0.04) |
|||||||
| no 98.9 (0.19) |
no 98.9 (0.18) |
no 99.8 (0.89) |
no 99.4 (0.52) |
no 100 (0.65) |
|||||||||
| qi4b | Transfusion of homologous blood (P) | 2008 | yes 90.7 | \ | yes 91 | yes 99.1 | yes 90.9 | -0.16 (0.26) |
0.08 (0.58) |
||||
| no 98.4 (0.09) |
no 90.7 (0.98) |
no 100 (0.09) |
no 97.4 (0.12) |
||||||||||
| 2009 | yes 91.8 | yes 91.5 | yes 92 | yes 91.8 | yes 91.5 | 0.01 (0.91) | 0.17 (0.12) |
||||||
| no 89.3 (0.57) |
no 94.1 (0.70) |
no 82.9 (0.26) |
no 75.8 (0.17) |
no 93.6 (0.55) |
|||||||||
| qi5b | Perioperative antibiotics (P) | 2008 | \ | \ | \ | \ | \ | \ | \ | \ | |||
| 2009 | yes 99.7 | yes 99.6 | yes 99.6 | yes 99.7 | yes 99.6 | 0.15 (0.16) |
0.27
(0.01) |
0.15 (0.17) |
|||||
| no 99.2 (0.60) |
no 100 (0.07) |
no 100 (0.06) |
no 97.8 (0.39) |
no 100 (0.06) |
|||||||||
| qi5c | Antibiotics 60–15 min (P) | 2008 | yes 97.1 | \ | \ | yes 99 | yes 97.2 | 0.15 (0.26) |
-0.04 (0.79) |
-0.11 (0.45) |
\ | ||
| no 100 ( 0.29) |
no 50 (0.51) |
no 100 (0.74) |
|||||||||||
| 2009 | yes 98 | yes 98 | yes 98.4 | yes 98 | yes 97.9 | 0.10 (0.32) |
0.28
(0.01) |
0.12 (0.25) |
0.46
(0.00) |
||||
| no 99 (0.57) |
no 100
(0.04) |
no 88.5 (0.28) |
no 100
(0.03) |
no 100
(0.03) |
|||||||||
| qi5d | Wound infections (O) | 2008 | yes 0.8 | \ | yes 0.8 | yes 0.84 | yes 0.8 | 0.12 (0.39) |
-0.03 (0.84) |
-0.28
(0.05) |
\ | 0.20 (0.14) |
|
| no 1.0 (0.74) |
no 1.0 (0.60) |
no 0.44 (0.26) |
no 0.3 (0.17) |
||||||||||
| 2009 | yes 0.01 | yes 0.01 | yes 0.01 | yes 0.01 | yes 0.01 | 0.01 (0.91) |
-0.04 (0.71) |
-0.19 (0.07) |
-0.03 (0.74) |
0.04 (0.74) |
|||
| no 0.01 (0.43) |
no 0.02
(0.001) |
no 0.0 (0.42) |
no 0.01 (0.72) |
no 0.01 (0.89) |
|||||||||
a numbers indicate indicator numbers according to vertical indicator numbering
b S = structure, P = process, O = outcome
c x2 test (p-value)
d t-test: mean group 1, 2 (p-value)
e Interpretation: Of hospitals having an complication register, 11 % reported to hold complication meetings, compared to 8,2 % of those who do not have an complication register (p-value = 0.41)
f Spearman correlation coefficient (p-value)
bold numbers indicate significance