Effect

Permanent impairment

Odds ratio

95% Confidence limits

CNAs vs. servers

0

0.962

0.682 - 1.398

Nurses vs. servers

0

0.781

0.566 - 1.079

Age category ≤ 45 yrs vs. >45 yrs

0

1.358

1.038 - 1.777

Gender F vs. M

0

0.701

0.429 - 1.146

Time to filing < 3 days vs. ≥3 days

0

0.784

0.593 - 1.036