| Telephone call rate (per 100 average weekly scheduled visits) for final intervention time period | ||||
|---|---|---|---|---|
| Study | Email group (mean) | Email group (total) | Control group (mean) | Control group (total) |
| Katz 2003 | 75.2 | 43 | 70 | 46 |
| Katz 2004 | 63.7 | 48 | 70.6 | 46 |
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