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. 1998 Nov 14;317(7169):1346–1349. doi: 10.1136/bmj.317.7169.1346

Table.

Comparison of birth variables included in trauma score for offspring who committed suicide who had or did not have siblings, and siblings. Values are numbers (percentages) unless stated otherwise

Perinatal risk factor Offspring
Total (%) Siblings (n=403) Offspring to sibling percentage ratio P value
Who had siblings Who had no siblings (n=117)
(n=242)
Presentation other than vertex 13 (5.4)  4 (3.4) 17 (4.7)  7 (1.7) 2.7 0.02
Meconium stained amniotic fluid and membranes 17 (7.0) 10 (8.5) 27 (7.5) 18 (4.5) 1.7 0.07
Instrumental delivery or internal version 10 (4.1)  13 (11.1) 23 (6.4) 15 (3.7) 1.7 0.09
Emergency caesarean section  1 (0.4)  1 (0.9)  2 (0.6)  2 (0.5) 1.1 0.91
Resuscitation  9 (3.7)  9 (7.7) 18 (5.0)  9 (2.2) 2.2 0.04
Other complication 15 (6.2) 10 (8.5) 25 (7.0)  9 (2.2) 3.1  0.002