Table 1 The spot sign score in primary intracerebral hemorrhage

From: Extended analysis of the spot sign score's performance

Spot sign score*

Hematoma expansion (95% CI)‡

Poor clinical outcome (95% CI)§

Sensitivity

Specificity

Sensitivity

Specificity

≥0

100 (93.6–100)

0 (0–1.2)

100 (98.8–100)

0 (0–1.4)

≥1

87.5 (75.9–94.8)

92.9 (89.5–95.5)

33.7 (28.4–39.2)

89 (84.6–95.2)

≥2

76.8 (63.6–87)

96.8 (94.2–98.4)

26.9 (22–32.2)

93.2 (89.4–95.9)

≥3

60.7 (46.8–73.5)

99.7 (98.2–100)

15.2 (11.4–19.7)

97 (94.1–98.7)

≥4

30.4 (18.8–44.1)

100 (98.8–100)

6.5 (4–9.8)

99.2 (97.3–99.9)

  1. *A score of zero indicated that no spot sign was identified on the CT angiogram.
  2. ‡Hematoma expansion was defined as an increase >30% or >6 ml of the initial intracerebral hemorrhage volume.
  3. §Poor clinical outcome was defined as a modified Rankin Scale score ≥4 at 3 month follow-up.
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