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Table 1 Parameter estimates for segmented regression analysis of monthly injury hospitalization rates, January 2012–December 2017, by mechanism of injury

From: Interrupted time series design to evaluate the effect of the ICD-9-CM to ICD-10-CM coding transition on injury hospitalization trends

Mechanism of Injury Time ICD10CM Time-after-ICD10CM
Cut/Piercea − 0.004* 0.05 0.01*
Fall 0.04* 0.40 −0.05
Fire/Burn −0.0002 − 0.09 0.0003
Firearm 0.001 −0.001 0.008*
Machinerya − 0.0004 0.05 −0.002
Motor Vehicle Traffica − 0.03* 0.34 0.04*
Natural/Environmentala − 0.004* 0.05 0.001
Pedal cyclist, othera − 0.001 −0.06 − 0.0002
Poisoninga − 0.03* 1.29* − 0.02
Struck by, againsta − 0.006* 0.53** − 0.002
Suffocation 0.001 0.08* − 0.002
Other specified and classifiablea − 0.004* 0.001 0.004
Other specified, not elsewhere classifiable 0.001 −0.16** − 0.002
Transportation, othera − 0.005* 0.75** − 0.02*
Unspecified mechanism 0.002 0.29* − 0.005
  1. Notes: Each model had a significant intercept
  2. *p < 0.05
  3. **p < 0.001
  4. aThe final model included autoregressive parameter(s) significant at the 0.05 level