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. 2016 Mar 1;158:829–835. doi: 10.1007/s00701-016-2746-z

Table 3.

Sliding dichotomy analysis of weekend effect for GOS at 3 months after SAH

Worse than expected Better than expected Odds ratio P value
Prognosisa GOS 1 2 3 4 5
Good (WFNS I) Weekend 2 0 2 11 141 15 141 0.59 (0.22, 1.57) 0.27
Weekday 5 0 0 3 47 8 47
Intermediate (WFNS II & II) Weekend 8 0 1 12 41 9 53 1.03 (0.25, 4.25) 0.96
Weekday 2 0 2 4 15 4 19
Worst prognosis (WFNS IV & V) Weekend 19 1 11 15 20 20 46 0.49 (0.18, 1.45) 0.17
Weekday 10 1 3 3 6 11 12

aGood, worse and intermediate prognosis bands were based on WFNS cut-offs