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Table 1 Quality of patient address and phone number information in designated microscopy center (DMC) registries in Chennai and ease of patient trackability

From: Pretreatment loss to follow-up of tuberculosis patients in Chennai, India: a cohort study with implications for health systems strengthening

  Chest symptomatics (n = 3696) Diagnosed smear-positive patients (n = 423)
N (%) N (%)
Phone number listed in DMC registry
 Yes 2231 (60.4) 316 (74.7)
 No 1454 (39.3) 104 (24.6)
 Illegible 11 (0.3) 3 (0.7)
Address listed in DMC registry
 Trackable 606 (16.4) 56 (13.2)
 Incomplete or illegible 3046 (83.4) 367 (86.8)
 Missing 44 (1.2) 0 (0.0)
Ease of “trackability”
 Probably trackablea 414 (11.2) 43 (10.2)
 Possibly trackablea 2009 (54.4) 286 (67.6)
 Untrackablea 1273 (34.4) 94 (22.2)
  1. aPatients were “probably trackable” if a legible phone number and trackable address were available; “possibly trackable” if only one of the two was available; and “untrackable” if neither a legible phone number nor trackable address was available