Table 2.
Participation proportions during main randomised phase (90 days from invite)
| Randomised group |
Took a sample |
Participation proportion |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clinic-based self-samplingn (%) | Home-based self-samplingn (%) | Usual caren (%) | Clinic-based self-samplingn | Home-based self-samplingn | Usual caren | Clinic-based self-sampling% | Clinic Pearson 'versus' usual carep | Home-based self-sampling% | Home Pearson 'versus' usual carep | Self-sampling groups combined% | Combined Pearson 'versus' usual carep | Usual care% | |
| All | 1574 (44.3) | 1467 (41.3) | 512 (14.4) | 100 | 205 | 14 | 6.4 | 0.002 | 14.0 | 0.000 | 10.0 | 0.000 | 2.7 |
| Age group | |||||||||||||
| 30-39 | 578 (36.7) | 577 (39.3) | 197 (38.5) | 29 | 87 | 5 | 5.0 | 0.142 | 15.1 | 0.000 | 10.0 | 0.001 | 2.5 |
| 40-49 | 434 (27.6) | 376 (25.6) | 145 (28.3) | 35 | 48 | 5 | 8.1 | 0.058 | 12.8 | 0.002 | 10.2 | 0.009 | 3.4 |
| 50-59 | 341 (21.7) | 311 (21.2) | 107 (20.9) | 21 | 40 | 1 | 6.2 | 0.029 | 12.9 | 0.000 | 9.4 | 0.003 | 0.9 |
| 60-69 | 221 (14.0) | 203 (13.8) | 63 (12.3) | 15 | 30 | 3 | 6.8 | 0.561 | 14.8 | 0.035 | 10.6 | 0.146 | 4.8 |
| Ethnicity | |||||||||||||
| Māori | 469 (29.8) | 451 (30.7) | 153 (29.9) | 33 | 66 | 3 | 7.0 | 0.020 | 14.6 | 0.000 | 10.8 | 0.001 | 2.0 |
| Pacific | 569 (36.1) | 502 (34.2) | 180 (35.2) | 30 | 44 | 3 | 5.3 | 0.040 | 8.8 | 0.001 | 6.9 | 0.007 | 1.7 |
| Asian | 536 (34.1) | 514 (35.0) | 179 (35.0) | 37 | 95 | 8 | 6.9 | 0.246 | 18.5 | 0.000 | 12.6 | 0.002 | 4.5 |
| Screening history | |||||||||||||
| Never screened | 704 (44.7) | 657 (44.8) | 202 (36.5) | 44 | 96 | 6 | 6.3 | 0.072 | 14.6 | 0.000 | 10.3 | 0.001 | 3.0 |
| Under- screened | 870 (55.3) | 810 (55.2) | 310 (60.5) | 56 | 109 | 8 | 6.4 | 0.010 | 13.5 | 0.000 | 9.8 | 0.000 | 2.6 |
| Ethnicity & Screening history | |||||||||||||
| Māori never screened | 109 (23.2) | 101 (22.4) | 24 (15.7) | 8 | 13 | 0 | 7.3 | 0.171 | 12.9 | 0.063 | 10.0 | 0.104 | 0.0 |
| Māori under-screened | 360 (76.8) | 350 (77.6) | 129 (84.3) | 25 | 53 | 3 | 6.9 | 0.053 | 15.1 | 0.000 | 11.0 | 0.002 | 2.3 |
| Pacific never screened | 236 (41.5) | 192 (38.3) | 62 (34.4) | 12 | 17 | 2 | 5.1 | 0.538 | 8.9 | 0.143 | 6.8 | 0.283 | 3.2 |
| Pacific under-screened | 333 (58.5) | 310 (61.8) | 118 (65.6) | 18 | 27 | 1 | 5.4 | 0.034 | 8.7 | 0.003 | 7.0 | 0.010 | 0.8 |
| Asian never screened | 359 (66.9) | 364 (70.8) | 116 (64.8) | 24 | 66 | 4 | 6.7 | 0.198 | 18.1 | 0.000 | 12.4 | 0.004 | 3.4 |
| Asian under-screened | 177 (33.0) | 150 (29.2) | 63 (35.2) | 13 | 29 | 4 | 7.3 | 0.791 | 19.3 | 0.017 | 12.8 | 0.143 | 6.3 |
| NZDep2018, quintile | |||||||||||||
| 1 (least deprived) | 132 (8.4) | 105 (7.2) | 33 (6.4) | 8 | 23 | 2 | 6.1 | 1.000 | 21.9 | 0.039 | 13.1 | 0.249 | 6.1 |
| 2 | 203 (12.9) | 188 (12.8) | 75 (14.6) | 18 | 38 | 1 | 8.9 | 0.027 | 20.2 | 0.000 | 14.3 | 0.002 | 1.3 |
| 3 | 287 (18.2) | 290 (19.8) | 102 (19.9) | 22 | 44 | 2 | 7.7 | 0.040 | 15.2 | 0.000 | 11.4 | 0.003 | 2.0 |
| 4 | 437 (27.8) | 387 (26.4) | 135 (26.4) | 32 | 57 | 4 | 7.3 | 0.068 | 14.7 | 0.000 | 10.8 | 0.004 | 3.0 |
| 5 (most deprived) | 515 (32.7) | 497 (33.9) | 166 (32.4) | 20 | 43 | 5 | 3.9 | 0.604 | 8.7 | 0.015 | 6.2 | 0.100 | 3.0 |
| Missing | 0 | 0 | 1 (0.2) | 0 | 0 | 0 | - | - | - | - | - | - | - |
Column percentages add to 100% (apart from rounding). P value: Pearson's x2vs. usual care. NZDep: New Zealand Deprivation Index 2018.