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Table 2 Number of diary reports versus sensor recordings stratified by contact duration

From: Contact diaries versus wearable proximity sensors in measuring contact patterns at a conference: method comparison and participants’ attitudes

  Sensor
Diary No detection <5 min 5-15 min 15-60 min >60 min Unknown ID Σ
No report n.d. 302 a (394b) 9 (11) 2 (2) 0 (0) n.d. 313 (407)
<5 min 49 (49) 63 (52) 5 (4) 1 (1) 0 (0) 2 (14) 120 (120)
5-15 min 29 (27) 37 (29) 5 (5) 2 (2) 0 (0) 0 (10) 73 (73)
15-60 min 18 (18) 27 (26) 6 (5) 6 (6) 0 (0) 2 (4) 59 (59)
>60 min 3 (3) 20 (11) 16 (17) 21 (24) 2 (2) 0 (5) 62 (62)
Duration missing 7 (7) 8 (7) 0 (0) 0 (0) 0 (0) 0 (1) 15 (15)
Σ 106 (104) 457 (519) 41 (42) 32 (35) 2 (2) 4 (34) 642 (736)
  1. Columns contain sensor measurements, rows diary reports; bold numbers show data after filtering (sensor data) and matching (sensor-optimized), numbers in parentheses show crude data; n.d. = not defined; a272 1 min duration, b307 1 min duration, both sensor-measured