General characteristics of participants in a study comparing ready-made spectacles (RMS) with custom-made spectacles (CS) in India
| RMS (n=193) | CS (n=197) | |
| Age, mean (±SD) | 30.4 (±9.3) | 30.4 (±9.3) |
| Gender, n (% male) | 82 (42.5) | 83 (42.1) |
| Household annual income in INR, n (%) | ||
| <60 000 (US$1500) | 151 (80.3) | 151 (77.8) |
| 60 000–120 000 (US$1500–US$3000) | 23 (12.2) | 31 (16.0) |
| >120 000 (>US$3000) | 14 (7.5) | 12 (6.2) |
| Own following items, n (%) | ||
| Television | 140 (72.5) | 141 (71.6) |
| Telephone | 151 (78.2) | 155 (78.7) |
| Bicycle | 55 (28.5) | 50 (25.4) |
| Scooter, motorcycle or moped | 47 (24.4) | 44 (22.3) |
| Car, jeep or van | 12 (6.2) | 4 (2.0) |
| None of the above | 20 (10.4) | 19 (9.6) |
| People in household | ||
| Adults, median (IQR) | 3 (2–5) | 3 (2–5) |
| Children, median (IQR) | 2 (1–4) | 2 (1–3) |
| Married, n (%) | 107 (55.4) | 113 (57.4) |
| Education, n (%) | ||
| Illiterate | 30 (15.5) | 25 (12.7) |
| Primary school | 45 (23.3) | 48 (24.4) |
| Secondary school | 37 (19.2) | 31 (15.7) |
| Higher secondary school | 33 (17.1) | 37 (18.8) |
| Graduate, postgraduate or professional | 48 (24.9) | 56 (28.4) |
| Occupation, n (%) | ||
| Labourer | 23 (11.9) | 24 (12.2) |
| Office | 27 (14.0) | 32 (16.2) |
| Professional | 6 (3.1) | 4 (2.0) |
| None | 91 (47.2) | 101 (51.3) |
| Other | 46 (23.8) | 36 (18.3) |
INR, Indian rupees.