Practice-specific antibiotic and consultation data: crude and standardised values for 108 general practices in 1997.
| Distribution of practice specific values | ||||||||
|---|---|---|---|---|---|---|---|---|
| Lowest practice | 25th centile | Median practice | 75th centile | Highest practice | Correlation coefficienta | P-value | ||
| All respiratory infections | Prescriptions per 100 consultations (n) | 45 | 72 | 78 | 86 | 98 | ||
| Consultations per 1000 registered patients (n) | 125 | 319 | 388 | 517 | 1110 | 0.414 | <0.001 | |
| Standardised prescribing ratio (%) | 58 | 93 | 102 | 110 | 126 | |||
| Standardised consultation ratio (%) | 31 | 80 | 95 | 127 | 261 | |||
| Ear infection | Prescriptions per 100 consultations (n) | 46 | 80 | 87 | 93 | 100 | ||
| Consultations per 1000 registered patients (n) | 1 | 23 | 33 | 51 | 100 | 0.418 | <0.001 | |
| Standardised prescribing ratio (%) | 55 | 93 | 100 | 107 | 115 | |||
| Standardised consultation ratio (%) | 4 | 63 | 87 | 130 | 238 | |||
| Sinus infection | Prescriptions per 100 consultations (n) | 46 | 89 | 92 | 95 | 100 | ||
| Consultations per 1000 registered patients (n) | 0 | 13 | 22 | 32 | 51 | 0.165 | 0.090 | |
| Standardised prescribing ratio (%) | 52 | 96 | 100 | 104 | 109 | |||
| Standardised consultation ratio (%) | 0 | 54 | 89 | 133 | 323 | |||
| Sore throat | Prescriptions per 100 consultations (n) | 15 | 62 | 76 | 85 | 99 | ||
| Consultations per 1000 registered patients (n) | 4 | 36 | 56 | 78 | 331 | 0.386 | <0.001 | |
| Standardised prescribing ratio (%) | 20 | 81 | 100 | 111 | 131 | |||
| Standardised consultation ratio (%) | 6 | 62 | 90 | 125 | 556 | |||
| Tonsillitis | Prescriptions per 100 consultations (n) | 31 | 86 | 91 | 94 | 100 | ||
| Consultations per 1000 registered patients (n) | 1 | 19 | 27 | 39 | 114 | 0.264 | 0.006 | |
| Standardised prescribing ratio (%) | 35 | 96 | 101 | 105 | 111 | |||
| Standardised consultation ratio (%) | 2 | 62 | 84 | 127 | 307 | |||
| Upper respiratory tract infection — site not specified | Prescriptions per 100 consultations (n) | 2 | 44 | 65 | 86 | 100 | ||
| Consultations per 1000 registered patients (n) | 4 | 52 | 90 | 157 | 931 | 0.444 | <0.001 | |
| Standardised prescribing ratio (%) | 3 | 67 | 97 | 127 | 157 | |||
| Standardised consultation ratio (%) | 3 | 46 | 81 | 140 | 687 | |||
| Common cold | Prescriptions per 100 consultations (n) | 0 | 7 | 13 | 25 | 84 | ||
| Consultations per 1000 registered patients (n) | 0 | 4 | 8 | 16 | 106 | 0.339 | <0.001 | |
| Standardised prescribing ratio (%) | 0 | 33 | 55 | 117 | 378 | |||
| Standardised consultation ratio (%) | 0 | 39 | 72 | 132 | 869 | |||
| Influenza | Prescriptions per 100 consultations (n) | 0 | 14 | 33 | 61 | 97 | ||
| Consultations per 1000 registered patients (n) | 0 | 4 | 10 | 15 | 457 | 0.221 | 0.022 | |
| Standardised prescribing ratio (%) | 0 | 31 | 67 | 126 | 210 | |||
| Standardised consultation ratio (%) | 0 | 32 | 72 | 110 | 3383 | |||
| Laryngitis | Prescriptions per 100 consultations (n) | 6 | 50 | 67 | 82 | 100 | ||
| Consultations per 1000 registered patients (n) | 0 | 3 | 5 | 7 | 19 | 0.073 | 0.467 | |
| Standardised prescribing ratiob (%) | 12 | 80 | 109 | 127 | 199 | |||
| Standardised consultation ratio (%) | 0 | 50 | 88 | 133 | 378 | |||
| Tracheitis/bronchitis | Prescriptions per 100 consultations (n) | 52 | 78 | 88 | 93 | 100c | ||
| Consultations per 1000 registered patients (n) | 0 | 9 | 17 | 35 | 237 | 0.267 | 0.006 | |
| Standardised prescribing ratioc (%) | 58 | 88 | 99 | 105 | 145 | |||
| Standardised consultation ratio (%) | 0 | 31 | 61 | 125 | 904 | |||
| Chest infection | Prescriptions per 100 consultations (n) | 32 | 81 | 88 | 92 | 100d | ||
| Consultations per 1000 registered patients (n) | 1 | 18 | 44 | 79 | 528 | 0.340 | <0.001 | |
| Standardised prescribing ratio (%) | 36 | 92 | 99 | 103 | 133 | |||
| Standardised consultation ratio (%) | 2 | 31 | 74 | 125 | 951 | |||
↵a Correlation coefficient for association of SCR with SPR.
↵b Based on 102 practices with non-zero consultations.
↵c Based on 107 practices with non-zero consultations.
↵d Figure capped at 100%; actual figures appear to exceed 100% because of double counting when both a penicillin and non-penicillin antibiotic were prescribed. SCR = sex-standardised consultation ratio. SPR = standardised prescription ratio.