Does the second ischemic stroke herald a higher proportional risk for cognitive and physical impairment than the first-ever one?

Table 8 Comparison between the different studied periods according to NIHSS

NIHSS	Baseline	After		Fr	p
NIHSS	Baseline	2 weeks	3 months	Fr	p
Group I (n = 40)
Min.–Max	2.0–10.0	2.0–10.0	2.0–7.0	27.208*	< 0.001*
Mean ± SD	4.03 ± 1.89	3.73 ± 1.74	3.18 ± 1.17
Median	3.0	3.0	3.0
Sig.bet.grps	p₁ = 0.288, p₂ = 0.003, p₃ = 0.057
Group II (n = 40)
Min.–Max	6.0–15.0	7.0–12.0	7.0–10.0	12.0*	0.002*
Mean ± SD	9.08 ± 2.18	8.83 ± 1.47	8.38 ± 0.95
Median	9.0	9.0	8.0
Significance between groups	p₁ = 0.737, p₂ = 0.049*, p₃ = 0.180