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. 2021 Nov 17;3:731098. doi: 10.3389/fdgth.2021.731098

Table 2.

Notification rates among close contacts and sporadic contacts using configuration #1 with selected weights split by various variables.

Setting (weights of buckets and time thresholds) Variable Close contacts
% (n)
p-value
(chi-square)
Sporadic contacts*
% (n)
p-value
(chi-square)
1.1
Scenario 0.538 0.228
Low: Queue 58 (19) 29 (11)
2.5 Public transport 64 (29) 18 (8)
Middle: Operating system 0.026 0.034
1.0 iOS 49(18) 13 (5)
Time: Android 73 (30) 33 (14)
10 min Location phone 0.494 0.016
Hand 66 (23) 34 (14)
Pocket 58 (25) 12 (5)
1.2
Scenario 0.729 0.319





Low:
Queue 61(20) 37 (14)
2.5 Public transport 64 (29) 27 (12)
Middle: Operating system 0.046 0.002
2.0 iOS 51 (19) 47 (20)
Time: Android 73 (30) 15 (6)
10 min Location phone 0.343 0.001
Hand 69(24) 49 (20)
Pocket 58 (25) 14 (6)
1.3
Scenario 0.538 0.228
Low: Queue 58(19) 29 (11)
2.0 Public transport 64 (29) 18 (8)
Middle: Operating system 0.026 0.034
1.5 iOS 49(18) 13 (5)
Time: Android 73 (30) 33 (14)
10 min Location phone 0.494 0.016
Hand 66(23) 34 (14)
Pocket 58 (25) 12 (5)
*

Sporadic contacts are those that do not fulfill the criteria of the “close contact”-definition; ≤ 2 m for ≥15 min.