Table 2.
System usage data
| Participant type | |||||
| Pulmonologists | Primary care physicians |
Certified asthma educators |
Patients with asthma |
All users | |
| Mean (SD) number of days logged in/week/user | 3.1 (2.0) | 4.4 (1.5) | 5.2 (1.6) | 5.3 (2.0) | 4.7 (2.0) |
| Mean (SD) number of logins/week/user | 4.4 (5.8) | 5.8 (5.2) | 6.4 (6.2) | 6.7 (6.6) | 6.1 (6.3) |
| Mean (SD) active logged-in time/day/usera (minutes) | 14 (24) | 16 (23) | 38 (50) | 24 (31) | 23 (33) |
| Mean (SD) number of changes made/day/user | 6.3 (14) | 6.0 (12) | 7.2 (9.9) | 8.8 (17) | 7.7 (15) |
| Range of total number of changes made/user (in 1 week) | 0–148 | 0–146 | 10–102 | 5–357 | 0–357 |
| Mean (SD) number of changes made/login | 9.9 (21) | 7.7 (13) | 8.0 (10) | 9.3 (17) | 9.0 (16) |
| Mean (SD) number of comments posted/user (in 1 week)b | 3.4 (3.9) | 2.0 (2.4) | 5.4 (10) | 0.9 (1.8) | 2.2 (4.5) |
| Mean (SD) number of chat entries/user (in 1 week)b | 3.9 (5.3) | 5.6 (6.1) | 8.8 (9.3) | 4.0 (4.4) | 5.0 (6.0) |
a The website did not have an automatic time-out feature, as we wanted to encourage users to keep it open on their desktops for periodic daily access. Given that some users remained logged on for a number of hours at a time, in order to estimate accurate “active” usage times, we truncated all logged-in times at 30 minutes after the last “activity” (including any change made, or comment or blog posted). In cases where two activities were separated by >60 minutes, we truncated logged-in times at 30 minutes after the first activity and 30 minutes before the second activity (for a maximum total “active” usage time of 60 minutes between activities).
b Chat and comment features were used by 28/35 (80%) and 16/35 (46%) participants, respectively.