Table 1 Participants on this research (n = 14)

P01

27

Postgraduate Student

Male

Ners

Bima

As volunteer in earthquake Lombok (August 14–20, 2018).

P02

39

PNS

Female

Ners

Java

As volunteer in earthquake Pariaman, 2008

P03

32

PNS

Female

Master

Dayak

As volunteer in earthquake Lombok (August 14–20, 2018).

P04

27

Lecturer

Female

Ners

Java

As volunteer in earthquake and tsunami Palu (Oct 22–24, 2018).

P05

30

Nurse

Female

Ners

Padang

As volunteer in eruption Merapi mt. Jogjajarta 2010

P06

38

PNS

Male

Master

Java

1. As volunteer in flood disaster, Aceh 2008; flood disaster, Pangkalan Brandan; earthquake, Padang

P07

33

Lecturer

Male

Master

Wakatobi

As volunteer in earthquake disaster Lombok (August, 27–312,018)

P08

24

Swasta

Male

Ners

Java

As volunteer in earthquake disaster, likuivasi Donggala, Sigi and Palu 2018.

P09

21

Swasta

Female

Diploma

Padang

As volunteer in earthquake disaster, likuivasi Donggala, Sigi and Palu 2018.

P10

29

Military

Male

Diploma-III

Palembang

As volunteer in earthquake disaster Pidi Jaya, tsunami Banten (2018)

P11

32

Military

Male

Diploma-III

Java

As volunteer in flood disaster, Jakarta (2014), earthquake Lombok 2018

P12

56

Lecturer

Female

Master

Sunda

As volunteer in flood disaster, Situ Gintung (2009), Jakarta (2014)

P13

30

Lecturer

Female

Mental Health specialist

Betawi

As volunteer in flood Situ Gintung (2009)

P14

31

Nurses

Male

Ners

Sunda

As volunteer in tsunami, Banten (2018) and earthquake in Lombok.