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Table 2 Subject characteristics by source of data and overall. Median and range of visual function measures are provided for first visit for each study, and overall visits

From: Validation of a vision-related activity scale for patients with retinitis pigmentosa

 CERADerbyMEEISERIVASNCOverall
Male12 (55%)69 (65%)211 (50%)7 (50%)14 (52%)313 (53%)
Median age (range) (yrs)68 (31–85)47 (18–83)37.5 (18–57)54 (43–77)47 (29–59)40 (18–85)
Median VA (range) (logMAR)0.35 (−0.04–2.4)NA0.24 (− 0.10–1.06)0.34 (− 0.04–0.70)0.51 (0.10–1.58)0.24 (−0.10–2.4)
Median Goldmann (range) (deg.2)235 (35–5958)NA5533 (74–14,119)222 (54–3351)NA6152 (35–16,679)
Median HFA (range) (dB)NANA1089 (269–3449)74 (13–119)NA981 (1.2–3449)
ERG (range) (μV)NANA2.28 (0.06–62.6)NANA2.28 (0.06–62.6)
  1. NA not available