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Table 3 Medical resources and cost-effectiveness results between the pre-intervention and post-intervention

From: Efficacy of an incentive intervention on secondary prophylaxis for young people with rheumatic fever: a multiple baseline study

Results Q1 Q2 Q3 Q4 Overall
Number of eligible patients   74 73 71 60 77
Number of phones allocated Post-intervention only 82 82 80 72 86
Number of visits before successful injection pre-intervention 107 109 106 81 403
Post-intervention 86 96 105 75 362
Number of phone calls/texts before successful injection pre-intervention 285 286 273 209 1053
Post-intervention 369 362 426 302 1459
Number of injections wasted pre-intervention 10 10 9 7 36
Post-intervention 7 8 15 7 37
Number of successful Injections pre-intervention 194 192 190 160 736
Post-intervention 212 212 201 165 790
Total costs pre-intervention $42,594 $42,499 $41,785 $34,209 $161,086
Post-intervention $55,928 $56,960 $56,324 $45,303 $214,514
Incremental Effectiveness (extra successful injections)   18 20 11 5 54
Incremental Cost   $13,335 $14,461 $14,539 $11,094 $53,428
ICER (cost per extra successful injection)   $741 $723 $1322 $2219 $989
  1. Patients were given a second phone if the first one was lost or broken; Note: Total costs include phone costs even though they were donated to the project