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. 2021 Apr 23;16(4):e0250087. doi: 10.1371/journal.pone.0250087

Table 1. Survey results of quality of life indices and ocular symptoms.

Men (N = 1006) Women (N = 994) P-value*
Age 49.0 ± 5.7 49.0 ± 5.7 0.891
SHS 4.16 ±1.0 4.38 ± 1.1 < 0.001*
PSQI 5.46 ± 2.92 5.32 ± 2.88 0.293
Symptomatic DED (%) 28.4 42.7 < 0.001*
Awareness of difficulty focusing (%) 71.6 69.8 0.376
Impact of difficulty focusing (%) 47.5 46.6 0.162
Near correction (%) 26.3 26.6 0.879
Burden for near visionA 1.59 ± 0.85 1.51 ± 0.79 0.027*
Burden for middle-distance visionA 1.41 ± 0.72 1.40 ± 0.71 0.704
Burden for far visionA 1.47 ± 0.77 1.50 ± 0.71 0.445

*P<0.05, chi-squared test or t-test as appropriate.

A1 = No burden without blurred vision; 2 = No burden with blurred vision; 3 = Burden with blurred vision. Abbreviations; SHS, Subjective Happiness Scale, PSQI, Pittsburg Sleep Quality Index global score.