Table 4 Threshold analyses of sterilizers and dental units using two piece-wise regression models
Threshold of sterilizers | β | 95% CI | p-value |
|---|---|---|---|
Dental units<6 | 0.08 | 0.036-0.123 | < 0.001 |
Dental units<15 | − 0.05 | −0.164-0.065 | 0.395 |
Dental units≥15 | 0.184 | −0.132-0.501 | 0.241 |
Likelihood Ratio test | – | – | 0.014 |