Table 1.
Age distribution
| Pre-intervention (n=435) | Post-intervention (n=445) | |||
|---|---|---|---|---|
| Age (years) | Risk for DDIs (%) | Total patients (n=435) | Risk for DDIs (%) | Total patients (n=445) |
| 11-20 | 9 (27) | 33 | 7 (18) | 39 |
| 21-30 | 13 (27) | 48 | 8 (16) | 49 |
| 31-40 * | 15 (54) | 28 | 8 (21) | 39 |
| 41-50 | 22 (39) | 56 | 29 (51) | 57 |
| 51-60 | 38 (51) | 75 | 34 (47) | 73 |
| 61-70 | 67 (64) | 104 | 39 (51) | 76 |
| 71-80 | 40 (69) | 58 | 37 (54) | 68 |
| 81-90 | 16 (76) | 21 | 17 (55) | 31 |
| Unknown** | 9 (75) | 12 | 5 (38) | 13 |
*
chi-square=7.90, p= 0.004 decrease in the incidence after intervention,
**
age of the patients was not available.