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Table 1 Characteristics of survivors according to participation in ≥1 study waves (n = 490)

From: Research participation after terrorism: an open cohort study of survivors and parents after the 2011 Utøya attack in Norway

Characteristics of survivors

Non-participants (n = 135)

Participants (n = 355)

p value

n/mean

(%/sd)

n/mean

(%/sd)

Mean age in years

19.0

(3.9)

19.3

(4.6)

0.473

Male gender

83

(61.5)

184

(51.8)

0.055

Residing in peripheral municipality

24

(17.8)

50

(14.3)

0.338

Hospitalized

8

(5.9)

28

(7.9)

0.457

Any parental participation

27

(20.0)

304

(85.6)

<0.001

Maternal participation

22

(16.3)

289

(81.4)

<0.001

Paternal participation

15

(11.1)

228

(64.2)

<0.001