Table 2.
Patient home video quality and frequency of interfering factors in each quality group as determined by physician ratings.
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| OVERALL VIDEO QUALITY | PHENOMENOLOGY CORRECTLY IDENTIFIED/n | ODDS RATIO (CI) | p | ATTRIBUTES INTERFERING WITH VIDEO INTERPRETATION | ||||||||
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| FRAMING ISSUES | NOISE INTERFERENCE | OBSTRUCTED VIEW | IMAGE QUALITY | SHORT LENGTH | LIGHTING ISSUES | VIDEO STABILITY | SOUND QUALITY | VIDEO FOCUS | ||||
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| Poor | 4/20 | 0.07 [0.01–0.72] |
<0.05 | 45% | 35% | 20% | 60% | 20% | 65% | 50% | 15% | 55% |
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| Fair | 17/30 | 0.26 [0.03–2.52] |
0.25 | 60% | 3% | 3% | 13% | 20% | 27% | 30% | 7% | 20% |
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| Good | 31/37 | 1.03 [0.10–10.50] |
0.97 | 24% | 3% | 11% | 3% | 19% | 24% | 11% | – | 19% |
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| Excellent | 5/6 | – | – | – | 33% | – | – | – | – | 83% | – | – |
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The table shows how often raters identified the phenomenology correctly in patient home videos in four film quality categories as determined by the rater. The odds ratios of the “poor”, “fair”, and “good” group are compared to the “excellent” group. The attributes that were determined to interfere with interpretation of the home videos are listed by the frequency in which they appear in each quality group.
Abbreviations: CI = confidence interval, “–” denotes an absent value.