Table 1 Characteristics of participants (N = 477)
Characteristic | N(%) or mean ± SD |
|---|---|
Panel A–-Socio-demographic | |
 Age, years | |
  Mean ± SD | 25.2 ± 6.0 |
  Range | 16–48 |
 Gender | |
  Male | 240 (50.3) |
  Female | 237 (49.7) |
 Occupation | |
  Students | 169 (35.4) |
  Others | 308 (64.6) |
 Educational level | |
  Primary or secondary school | 27 (5.7) |
  High school or technical secondary school | 107 (22.4) |
  Junior college | 103 (21.6) |
  University degree and above | 240 (50.3) |
 Marital status | |
  Married | 167 (35.0) |
  Single | 310 (65.0) |
 Residence | |
  Rural | 115 (24.1) |
  Urban | 362 (75.9) |
Panel B–- clinical | |
 Myopia in both eyes, D | |
  Mean ± SD | -4.50 ± 1.88 |
  Median | -4.25 |
  Range | -0.50 to -12.50 |
 Myopia in better eye, D | |
  Mean ± SD | -4.25 ± 1.85 |
  Median | -4.00 |
  Range | -0.50 to -12.50 |
 Duration of myopia, years | |
  Mean ± SD | 10.6 ± 5.4 |
  Median | 10 |
  Range | 1–30 |
 Type of corrective devices | |
  Wearing spectacles | 380 (79.7) |
  Contact lense | 31 (6.5) |
  Both | 25 (5.2) |
  Not wearing devices | 41 (8.6) |