Table 2.
Evaluation online information quality.
| Online services | Mean (SD) | t (df) | Cohen d | P value | |
| Online contact with experts | —a | –0.53 (213) | 0.10 | .59 | |
| Symptoms of hypochondria | 2.04 (0.88) | — | — | — | |
| No symptoms of hypochondria | 1.95 (0.80) | — | — | — | |
| Sharing with others affected | — | –2.26 (363) | 0.36 | .02 | |
| Symptoms of hypochondria | 2.00 (0.78) | — | — | — | |
| No symptoms of hypochondria | 1.71 (0.82) | — | — | — | |
| Websites of pharmaceutical companies | — | –3.18 (294) | 0.54 | .002 | |
| Symptoms of hypochondria | 1.67 (0.86) | — | — | — | |
| No symptoms of hypochondria | 1.21 (0.84) | — | — | — | |
| Websites of health experts | — | –1.94 (276) | 0.19 | .05 | |
| Symptoms of hypochondria | 2.00 (0.83) | — | — | — | |
| No symptoms of hypochondria | 1.74 (0.74) | — | — | — | |
| Professional health portal | — | –0.67 (329) | 0.12 | .50 | |
| Symptoms of hypochondria | 1.93 (0.67) | — | — | — | |
| No symptoms of hypochondria | 1.85 (0.69) | — | — | — | |
| Online diagnosis system | — | –2.88 (42) | 1.58 | .01 | |
| Symptoms of hypochondria | 2.00 (0.83) | — | — | — | |
| No symptoms of hypochondria | 0.76 (0.74) | — | — | — | |
| Online encyclopedias | — | –2.21 (60) | 0.33 | .03 | |
| Symptoms of hypochondria | 1.93 (72) | — | — | — | |
| No symptoms of hypochondria | 1.68 (0.80) | — | — | — | |
| Video portals | — | –3.84 (241) | 0.64 | < .001 | |
| Symptoms of hypochondria | 1.00 (0.87) | — | — | — | |
| No symptoms of hypochondria | 0.50 (0.67) | — | — | — | |
aNot applicable.