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Table 4 Mean risk perceptions of WLAN devices before and at the end of the experiment

From: Does precautionary information about electromagnetic fields trigger nocebo responses? An experimental risk communication study

 

Risk perception WLAN T0

Risk perception WLAN T3

Test statistic for differences between T0 and T3

M (90% CI)

M (90% CI)

 

Whole sample

(N = 137)

2.58 (2.43–2.73)

2.42 (2.27–2.56)

tdf = 136 = − 2.51 (p = .01)

Basic information

(N = 64)

2.56 (2.33–2.79)

2.33 (2.13–2.53)

tdf = 63 = − 2.65 (p = .01)

Precautionary information (N = 73)

2.59 (2.38–2.79)

2.49 (2.28–2.70)

tdf = 72 = − 1.04 (p = .30)

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Environmental Health

ISSN: 1476-069X