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Table 1 Demographic data of enrolled participants

From: Impact of Dry Eye Syndrome on Vision-Related Quality of Life in a Non-Clinic-Based General Population

feature   total (n = 229) group A (n = 70) group B (n = 50) group C (n = 49) group D (n = 60)
sex male 92 26 26 11 29
  female 137 44 24 38 31
age(yrs) average 60.7 ± 10.1 61.8 ± 9.91 61.6 ± 10.6 59.6 ± 10.9 59.5 ± 9.0
  range 41-86 43-85 41-86 42-83 41-83
occupation employed 46 (20.1 %) 17 9 9 11
  unemployed 12 (5.2 %) 3 3 4 2
  retired 171 (74.7 %) 50 38 36 47
education primary school 10 (4.4 %) 3 2 1 4
  junior middle school 15 (6.5 %) 4 4 4 3
  senior middle school 163 (71.2 %) 51 33 34 45
  university 31 (13.5 %) 4 10 9 8
  post-graduate 10 (4.4 %) 8 1 1 0