Appendix.
Completion rates and timeliness for visits 2 and 3 of the primary immunization series by per protocol study groups
| VISIT 2 | VISIT 3 | |||||||
|---|---|---|---|---|---|---|---|---|
| Total | Usual care | Intervention | Total | Usual care | Intervention | |||
| n(%) | n(%) | n(%) | P-value | n | n(%) | n (%) | P-value | |
| At least 1 text reminder per protocola | (n=655) | (n=362) | (n=293) | (n=557) | (n=333) | (n=224) | ||
| Visit was on schedule date | 237 (36.2) | 111 (30.7) | 126 (43.0) | .001 | 177 (31.8) | 90 (27.0) | 87 (38.8) | .003 |
| Visit was up to 7 days late | 439 (67.0) | 230 (63.5) | 209 (71.3) | .03 | 340 (61.0) | 191 (57.4) | 149 (66.5) | .03 |
| Visit was up to 14 days late | 500 (76.3) | 269 (74.3) | 231 (78.8) | .18 | 393 (70.6) | 225 (67.6) | 168 (75.0) | .06 |
| Visit was up to 30 days late | 545 (83.2) | 296 (81.8) | 249 (85.0) | .27 | 437 (78.5) | 256 (76.9) | 181 (80.8) | .27 |
| Visit was complete | 606 (92.5) | 333 (92.0) | 273 (93.1) | .57 | 497 (89.2) | 297 (89.2) | 200 (89.3) | .97 |
| All three text reminders per protocolb | (n=611) | (n=362) | (n=249) | (n=514) | (n=333) | (n=181) | ||
| Visit as on schedule date | 223 (36.5) | 111 (30.7) | 112 (45.0) | <.001 | 159 (30.9) | 90 (27.0) | 69 (38.1) | .009 |
| Visit was up to 7 days late | 415 (67.9) | 230 (63.5) | 185 (74.3) | .005 | 310 (60.3) | 191 (57.4) | 119 (65.8) | .06 |
| Visit was up to 14 days late | 470 (76.9) | 269 (74.3) | 201 (80.7) | .06 | 359 (69.8) | 225 (67.6) | 134 (74.0) | .13 |
| Visit was up to 30 days late | 510 (83.5) | 296 (81.8) | 214 (85.9) | .17 | 402 (78.2) | 256 (76.9) | 146 (80.7) | .32 |
| Visit was complete | 565 (92.5) | 333 (92.0) | 232 (93.2) | .59 | 459 (89.3) | 297 (89.2) | 162 (89.5) | .91 |
a
Visits for the intervention group that were not sent at least one text per protocol were excluded from the given visit analysis (n=65 for visit 2 and n=105 for visit 3).
b
Visits for the intervention group that were not sent all three texts per protocol were excluded from the given visit analysis (n=109 for visit 2 and n=148 for visit 3).