Table 2.
Unadjusted and adjusted linear regression models to predict zone diameters of inhibition by year for ceftriaxone, cefixime, and azithromycin. The coefficient (β) is the slope of the regression line in mm
| Antibiotic | Variable | Unadjusted | Adjusted | ||
|---|---|---|---|---|---|
| β (95% CI) | p value | β (95% CI) | p value | ||
| Cefixime | Year | - 0.50 (−1.04, 0.04) | 0.069 | −0.49 (−1.04, 0.05) | 0.074 |
| Age | 0.02 (−0.04, 0.08) | 0.467 | 0.02 (−0.03, 0.08) | 0.446 | |
| Sex | 0.34 (−1.02, 1.70) | 0.624 | 0.25 (− 1.11, 1.62) | 0.717 | |
| Ceftriaxone | Year | −0.83 (− 1.30, − 0.36) | 0.001 | − 0.83 (−91.30, − 0.35) | 0.001 |
| Age | 0.003 (− 0.05, 0.04) | 0.90 | −0.002 (− 0.05, 0.05) | 0.93 | |
| Sex | 0.22 (−0.97, 1.41) | 0.72 | 0.04 (−1.14, 1.22) | 0.95 | |
| Azithromycin | Year | −0.83 (−1.33, − 0.33) | 0.001 | −0.81 (− 1.31, − 0.31) | 0.002 |
| Age | 0.12 (− 0.04, 0.06) | 0.66 | 0.14 (− 0.04, 0.06) | 0.59 | |
| Sex | 0.81 (−0.44, 2.06) | 0.20 | 0.65 (−0.59, 1.90) | 0.30 | |