Table 1

Participants’ characteristics at the 15th Month, stratified by residence
No (%). of participants
Characteristics Total Wenchuan Mao P
Demographics
 Age, y
  8-12 307 (51.5) 134 (54.7) 173 (49.3) 0.19
  13-16 289 (48.5) 111(45.3) 178 (50.7)
 Sex
  Boys 297 (49.8) 114 (46.5) 183 (52.1) 0.18
  Girls 299 (50.2) 131 (53.5) 168 (47.9)
 Ethnicity
  Han 227 (38.1) 146 (59.6) 81 (23.1) < 0.001
  Ethnic minoritiesa 369 (61.9) 99 (40.4) 270 (76.9)
Earthquake-related experiences
 Having been in serious danger (Eq1) 297 (49.8) 104 (42.4) 193 (55.0) 0.003
 Having been seriously injured (Eq2) 58 (9.7) 29 (11.8) 29 (8.3) 0.15
 Having family members or friends seriously injured (Eq3) 101 (16.9) 41 (16.7) 60 (17.1) 0.91
 Having witnessed someone being killed or seriously injured (Eq4) 244 (40.9) 108 (44.1) 136 (38.7) 0.19
 Having lost family members (Eq5) 68 (11.4) 32 (13.1) 36 (10.3) 0.29
 Having lost significant others (Eq6) 145 (24.3) 58 (23.7) 87 (24.8) 0.76
 Having one’s house seriously damaged (Eq7) 425 (71.3) 150 (61.2) 275 (78.3) < 0.001
 Having lost important belongings (Eq8)b 244 (40.9) 97 (39.6) 147 (41.9) 0.58
 Having felt extremely anxious about one’s own life (Eq9) 439 (73.7) 157 (64.1) 282 (80.3) < 0.001
 Having felt scared that family members or significant others would die or be seriously injured (Eq10) 473 (79.4) 170 (69.4) 303 (86.3) < 0.001
 Having felt guilt concerning someone’s death or injury (Eq11) 220 (36.9) 80 (32.7) 140 (39.9) .07

a Ethnic minorities refer to non-Han population in China, which account for a larger population in the survey areas than Han people. b Important belongings refer to physical possessions of sentimental value to the child.

Jia et al.

Jia et al. BMC Public Health 2013 13:104   doi:10.1186/1471-2458-13-104

Open Data