Table 1 .
Effects of Age, Gender, and WebTV Use on Mean Response Times and Health Status Scores
| PCS |
MCS |
||||
|---|---|---|---|---|---|
| Subgroup | Response Time (min.) | Web Users | Norms | Web Users | Norms |
| Age (years): | |||||
| 18–24 | 4.75 | 52.6 | 53.4 | 40.8 | 49.1 |
| 25–34 | 4.99 | 52.3 | 53.7 | 43.2 | 48.6 |
| 35–44 | 5.02 | 51.1 | 52.2 | 47.0 | 49.9 |
| 45–54 | 5.42 | 49.6 | 49.6 | 48.7 | 50.5 |
| 55–64 | 6.10 | 48.6 | 45.9 | 48.2 | 51.1 |
| 65+ | 7.60 | 44.6 | 41.3 | 52.1 | 49.1 |
| Gender: | |||||
| emsp;emsp;emsp;emsp;Male | 5.35 | 52.1 | 51.1 | 46.0 | 50.7 |
| emsp;emsp;emsp;emsp;Female | 4.98 | 50.6 | 49.1 | 44.2 | 49.3 |
| WebTV user: | 6.03 | ||||
| Non-WebTV browser | 5.06 | ||||
notes: Values shown are unadjusted means for each population subgroup. Web users are the 1,464 trial participants who met inclusion criteria. Norms are from administration of the SF-36 to a nationally representative sample.8,12 The physical component summary (PCS) and mental component summary (MCS) health status summary scores are by definition normalized, so that a score of 50 is equivalent to the general population mean and a difference of 10 points represents 1standard deviation in the general population.