Table 1.
Case and control periods used in assessing the odds ratio for a serious fall injury associated with initiation, adding a new drug class, and antihypertensive medication titration.
| Case period | Control periods (primary analyses) |
Control period (secondary analyses) |
|---|---|---|
| Analysis of short-term risk for serious fall injuries | ||
| 0 to 14 days | Six control periods 30 to 44 days 60 to 74 days 90 to 104 days 120 to 134 days 150 to 164 days 180 to 194 days |
One control period 60 to 74 days |
| Analysis of long-term risk for serious fall injuries | ||
| 30 to 44 days | Five control periods 60 to 74 days 90 to 104 days 120 to 134 days 150 to 164 days 180 to 194 days |
One control period 90 to 104 days |
| 60 to 74 days | Four control periods 90 to 104 days 120 to 134 days 150 to 164 days 180 to 194 days |
One control period 120 to 134 days |
| 90 to 104 days | Three control periods 120 to 134 days 150 to 164 days 180 to 194 days |
One control period 150 to 164 days |