Tour No. | Tour’s Duration (wks) | PGY |
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Mean (95% CI)^{c} | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | Total |
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(*n* = 468) | (*n* = 393) | (*n* = 316) | (*n* = 243) | (*n* = 178) | (*n* = 120) | (*n* = 85) | (*n* = 54) | (*n* = 28) | (*n* = 7) | (*N* = 468) |
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**1 (***n***= 239)**^{a} | 61.1 (52.5, 69.7) | 3375 | 7 | 2868 | 1970 | 1462 | 712 | 295 | 182 | 104 | 52 | 14607 |

**2 (***n***= 41)**^{a} | 62.7 (45.6, 79.7) | 0 | 0 | 452 | 710 | 465 | 366 | 260 | 118 | 130 | 68 | 2569 |

**3 (***n***= 7)**^{a} | 85.4 (18.6, 152.2) | 0 | 0 | 0 | 0 | 104 | 200 | 104 | 104 | 86 | 0 | 598 |

**4 (***n***= 1)**^{a} | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 12 |

**Across All 288 Tours** | 61.8 (54.1, 69.4) | 3375 | 3587 | 3320 | 2680 | 2031 | 1278 | 659 | 416 | 320 | 120 | 17786 |

**Overall Mean Duration per graduate per PGY**^{d} | 7.2 (5.8, 8.6) | 9.1 (7.4, 10.9) | 10.5 (8.4, 12.6) | 11.0 (8.5, 13.6) | 11.4 (8.4, 14.4) | 10.7 (7.3, 14.0) | 7.8 (4.0, 11.5) | 7.7 (3.1, 12.3) | 11.4 (3.9, 19.0) | 17.1 (-1.0, 35.3) | 38.0 (32.1, 43.9) |

- The cohort size (n) per PGY in italic subheading only contributes to the calculations of the overall mean duration contributed by each graduate in each PGY (i.e., the final row of the table)
^{a}Of *N* = 468, there were 229 graduates who did not contribute any tour (of at least 2 weeks consecutively) of rural service. The remaining 239 graduates had at least 1 tour, with 41 at least 2 tours, 7 with at least 3 tours, and 1 with 4 tours. Worded differently, 198 graduates had only 1 tour, 34 with 2 tours, 6 with 3 tours, and 1 with 4 tours^{b} A ‘tour’ of rural service here is defined as a duration of at least 2 consecutive weeks. Multiple short tours (of ≥2 consecutive weeks each) within one calendar year are summed together for duration calculation and treated as 1 tour for that particular year^{c} Summary tour statistics are calculated among graduates incurring the concerned tours of service only. For example, Tour 1’s duration is calculated based on *n* = 239 graduates who contributed at least 1 tour of rural service (of at least 2 consecutive weeks), and excludes *n* = 229 graduates with zero tour in rural work^{d} Statistics presented are Mean Duration (95% Confidence Interval), in weeks