| Variable | Total (n = 10459) | Number with RTI (% of total) | Annual non-fatal RTI incidence per 100 persons (95% CI) | |||
| Recovery period of ⩽7 days* | Recovery period of 8–29 days* | Recovery period of ⩾30 days* | Overall | |||
| Age group (years)†‡ | ||||||
| 5–9 | 1425 | 56 (3.9) | 10.0 (9.6 to 10.4) | 4.2 (3.9 to 4.4) | 0.6 (0.5 to 0.7) | 15.6 (15.0 to 16.2) |
| 10–14 | 1384 | 73 (5.3) | 14.8 (14.4 to 15.3) | 6.1 (5.9 to 6.4) | 1.3 (1.2 to 1.4) | 23.5 (22.9 to 24.1) |
| 15–19 | 1372 | 91 (6.6) | 18.9 (18.4 to 19.3) | 8.9 (8.7 to 9.2) | 1.3 (1.2 to 1.4) | 30.1 (29.5 to 30.8) |
| 20–29 | 2825 | 158 (5.6) | 13.4 (13.0 to 13.9) | 5.8 (5.5 to 6.0) | 1.6 (1.5 to 1.7) | 20.9 (20.3 to 21.6) |
| 30–39 | 1972 | 103 (5.2) | 13.1 (12.7 to 13.6) | 5.6 (5.3 to 5.8) | 1.0 (0.9 to 1.1) | 20.5 (19.8 to 21.1) |
| 40–49 | 1481 | 56 (3.8) | 7.7 (7.3 to 8.2) | 4.2 (4.0 to 4.5) | 1.5 (1.3 to 1.6) | 13.8 (13.2 to 14.4) |
| Sex¶§ | ||||||
| Male | 5376 | 381 (7.1) | 17.8 (17.1 to 18.4) | 8.5 (8.1 to 8.9) | 1.6 (1.4 to 1.7) | 28.7 (27.8 to 29.6) |
| Female | 5083 | 156 (3.1) | 7.9 (7.5 to 8.4) | 2.9 (2.7 to 3.1) | 0.9 (0.7 to 1.1) | 12.2 (11.4 to 12.9) |
| PCMI quartiles (Indian Rupees)**†† | ||||||
| ⩽625 | 2635 | 124 (4.7) | 12.3 (11.9 to 12.7) | 5.3 (5.1 to 5.6) | 0.9 (0.8 to 1.0) | 18.8 (18.2 to 19.5) |
| 626–1100 | 2483 | 135 (5.4) | 13.7 (13.2 to 14.1) | 5.8 (5.5 to 6.1) | 1.4 (1.3 to 1.6) | 21.7 (21.1 to 22.4) |
| 1101–2136 | 2477 | 140 (5.7) | 13.4 (12.9 to 13.8) | 6.0 (5.7 to 6.2) | 2.3 (2.1 to 2.4) | 22.6 (22.0 to 23.2) |
| >2136 | 2522 | 132 (5.2) | 13.6 (13.2 to 14.1) | 6.0 (5.8 to 6.3) | 0.6 (0.5 to 0.7) | 20.9 (20.3 to 21.6) |
| Overall‡‡ | 10459 | 537 (5.1) | 13.0 (12.6 to 13.4) | 5.8 (5.5 to 6.0) | 1.2 (1.1 to 1.4) | 20.7 (20.0 to 21.3) |
*Data on recovery period missing for 17 participants.
†Sex-adjusted incidence.
‡p<0.001; χ2 test.
¶Age-adjusted incidence.
§p<0.0079; χ2 test.
**Per capita monthly income; 1 US$ (£0.58; €0.74) was approximately 44 Indian Rupees during the study period; data not available for 342 participants including six with RTI.
††p<0.001; χ2 test.
‡‡Age/sex-adjusted incidence.