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Table 5 Diagnostic performance of NBI for JNET Type 2B lesions before and after the lecture

From: Effect of educational lecture on the diagnostic accuracy of Japan NBI Expert Team classification for colorectal lesions

Variables

NEE

LEE

HEE*

Before

After

Before

After

Before

After

Sensitivity

59.3 (53.6–64.8)

63.6 (58.0–69.0)

68.8 (63.2–74.0)

86.6 (82.2–90.1)+

93.9 (88.2–97.1)

91.9 (86.0–95.7)

Specificity

68.5 (67.2–69.8)

73.8 (72.5–75.0)+

69.5 (68.2–70.6)

87.7 (86.7–88.4)+

89.8 (88.5–90.5)

92.1 (90.7–92.9)++

PPV

29.7 (26.8–32.5)

35.3 (32.1–38.2)

33.6 (30.9–36.1)

61.2 (58.1–63.6)+

67.4 (63.3–69.7)

72.2 (67.5–75.2)

NPV

88.2 (86.6–89.8)

90.0 (88.5–91.5)

90.9 (89.2–92.4)

96.7 (95.6–97.5)+

98.5 (97.1–99.3)

98.1 (96.6–99.0)

Accuracy

66.8 (64.7–68.9)

71.9 (69.8–73.9)+

69.4 (67.3–71.3)

87.5 (85.9–88.8)+

90.6 (88.5–91.7)

92.0 (89.9–93.4)

κ-Value

0.0589

0.0705

0.00736

0.144

0.29

− 0.0703

  1. JNET Japan NBI Expert Team
  2. (95% confidence interval)
  3. *HEE group has no lecture
  4. +Denotes statistical significance P < 0.01
  5. ++Denotes statistical significance P < 0.05