Table 1 Comparison of selected baseline characteristics between participants retained for analysis and those lost to follow-up. AdoQuest 2005.
| Â | Retained (n = 1025) | Lost to follow-up (n = 632) | p-value for difference |
|---|---|---|---|
Girls, % | 55.4 | 53.2 | 0.414 |
Age, mean (sd) | 10.8 (0.5) | 10.8 (0.6) | 0.090 |
Mother university-educated, % | 27.9 | 18.4 | 0.000 |
Annual household income (CAN$)*, % | |||
<30,000 | 9.3 | 8.8 | 0.996 |
30,000-99,999 | 62.5 | 61.9 | Â |
≥100,000 | 28.2 | 29.3 |  |