Table 1 Demographics (N(%)) of the target population, non-responders, and responders included in the 24-month sample
Test-negatives: invited (N = 17,322) | Test-negative: non-responders (N = 10,386) | Test-negative: responders (N = 6936) | pa | Test-positives: invited (N = 13,690) | Test-positive: non-responders (N = 7994) | Test-positive: responders (N = 5696) | pa | |||
|---|---|---|---|---|---|---|---|---|---|---|
Participating initial-negatives (NN; N = 4534) | Participating initial-negatives & infected (NP; N = 2402) | Participating initial-positives (PN; N = 5177) | Participating initial-positive & reinfected (PP; N = 519) | |||||||
Response rate: 40.0% | Response rate: 41.6% | |||||||||
Sex | ||||||||||
Female | 10,666 (61.6) | 6112 (58.9) | 2974 (65.6) | 1580 (65.8) | <0.001 | 8385 (61.3) | 4709 (58.9) | 3337 (64.5) | 339 (65.3) | <0.001 |
Male | 6656 (38.4) | 4274 (41.2) | 1560 (34.4) | 822 (34.2) | 5305 (38.7) | 3285 (41.1) | 1840 (35.5) | 180 (34.7) | ||
Age at index test (years) | ||||||||||
11–14 | 8459 (48.8) | 5302 (51.1) | 1891 (41.7) | 1266 (52.7) | <0.001 | 6398 (46.7) | 3795 (47.5) | 2342 (45.2) | 261 (50.3) | 0.04 |
15–17 | 8863 (51.2) | 5084 (49.0) | 2643 (58.3) | 1136 (47.3) | 7292 (53.3) | 4199 (52.5) | 2835 (54.8) | 258 (49.7) | ||
Ethnicity | ||||||||||
White | 13,043 (75.3) | 7763 (74.7) | 3333 (73.5) | 1947 (81.1) | 0.03 | 10,155 (74.2) | 5900 (73.8) | 3856 (74.5) | 399 (76.9) | 0.16 |
Asian/Asian British | 2441 (14.1) | 1483 (14.3) | 720 (15.9) | 238 (9.9) | 2112 (15.4) | 1247 (15.6) | 789 (15.2) | 76 (14.6) | ||
Mixed | 934 (5.4) | 565 (5.4) | 241 (5.3) | 128 (5.3) | 681 (5.0) | 390 (4.9) | 263 (5.1) | 28 (5.4) | ||
Black/African/Caribbean | 543 (3.1) | 328 (3.2) | 158 (3.5) | 57 (2.4) | 390 (2.9) | 230 (2.9) | 151 (2.9) | 9 (1.7) | ||
Other | 260 (1.5) | 180 (1.7) | 53 (1.2) | 27 (1.1) | 264 (1.9) | 175 (2.2) | 87 (1.7) | 2 (0.4) | ||
Prefer not to say | 101 (0.6) | 67 (0.7) | 29 (0.6) | 5 (0.2) | 88 (0.6) | 52 (0.7) | 31 (0.6) | 5 (1.0) | ||
Region | ||||||||||
East Midlands | 1159 (6.7) | 667 (6.4) | 315 (7.0) | 177 (7.4) | 0.001 | 1051 (7.7) | 613 (7.7) | 396 (7.6) | 42 (8.1) | 0.004 |
East of England | 3836 (22.2) | 2238 (21.6) | 989 (21.8) | 609 (25.4) | 2211 (16.2) | 1260 (15.8) | 878 (17.0) | 73 (14.1) | ||
London | 3539 (20.4) | 2161 (20.8) | 961 (21.2) | 417 (17.4) | 2,618 (19.1) | 1537 (19.2) | 988 (19.1) | 93 (17.9) | ||
North East England | 602 (3.5) | 375 (3.6) | 160 (3.5) | 67 (2.8) | 596 (4.3) | 368 (4.6) | 210 (4.1) | 18 (3.5) | ||
North West England | 1895 (10.9) | 1180 (11.4) | 495 (10.9) | 220 (9.2) | 1711 (12.5) | 1044 (13.1) | 600 (11.6) | 67 (12.9) | ||
South East England | 2750 (15.9) | 1588 (15.3) | 735 (16.2) | 427 (17.8) | 2167 (15.8) | 1201 (15.0) | 883 (17.1) | 83 (16.0) | ||
South West England | 772 (4.5) | 453 (4.4) | 192 (4.2) | 127 (5.3) | 742 (5.4) | 414 (5.2) | 284 (5.5) | 44 (8.5) | ||
West Midlands | 1601 (9.2) | 999 (9.6) | 403 (8.9) | 199 (8.3) | 1431 (10.4) | 862 (10.8) | 519 (10.0) | 50 (9.6) | ||
Yorkshire and the Humber | 1168 (6.7) | 725 (7.0) | 284 (6.3) | 159 (6.6) | 1163 (8.5) | 695 (8.7) | 419 (8.0) | 49 (9.4) | ||
IMD quintileb | ||||||||||
1 (most deprived) | 2929 (16.9) | 1836 (17.7) | 758 (16.7) | 335 (14.0) | <0.001 | 2416 (17.6) | 1483 (18.6) | 825 (16.0) | 108 (20.8) | 0.001 |
2 | 3071 (17.7) | 1873 (18.0) | 815 (18.0) | 383 (16.0) | 2477 (18.1) | 1458 (18.2) | 928 (17.9) | 91 (17.6) | ||
3 | 3283 (18.9) | 1964 (18.9) | 859 (19.0) | 460 (19.2) | 2509 (18.3) | 1470 (18.4) | 941 (18.2) | 98 (18.9) | ||
4 | 3739 (21.6) | 2248 (21.6) | 965 (21.3) | 526 (21.9) | 2917 (21.3) | 1704 (21.3) | 1108 (21.4) | 105 (20.2) | ||
5 (least deprived) | 4300 (24.0) | 2465 (23.7) | 1137 (25.1) | 698 (29.1) | 3371 (24.6) | 1879 (23.5) | 1375 (26.5) | 117 (22.5) | ||
