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. Author manuscript; available in PMC: 2019 Oct 1.
Published in final edited form as: Am J Ophthalmol. 2018 Jul 24;194:120–125. doi: 10.1016/j.ajo.2018.07.012

Table 2.

Descriptive statistics for the demographics, genetic characterization, and follow-up time of the retinitis pigmentosa patients.

N (%) Age During Visit 1 (yr) Age During Visit 2 (yr)
Patients 22 36.03 ± 16.69 38.26 ± 16.71
 Males 13 (59.1)
 Females 9 (40.9)
Disease subtype Disease-causing Gene Variants (# of patients)
 ARRP 8 (36.3) CDHR1 (1), DHDDS (1), MAK (1), Unknown (5)
 ADRP 10 (45.5) RP1 (3), KLHL7 (2), PRPF31 (2), NRL (1), RHO (1), Unknown (1)
 XLRP 2 (9.1) RPGR (2)
 USH 2 (9.1) CLRN1 (1), USH2A (1)
Mean Standard
Deviation
Quantile
Minimum 25th Median 75th Maximum
Follow-up time
(yr)
2.23 1.62 0.25 0.88 1.65 3.19 5.27

Data are summarized as mean ± standard deviation where appropriate. ARRP = autosomal recessive retinitis pigmentosa; ADRP = autosomal dominant retinitis pigmentosa; XLRP = X- linked retinitis pigmentosa; USH = Usher syndrome.