Table 1 Overview of the brain samples analyzed in this study.

From: Differential microRNA expression analyses across two brain regions in Alzheimer’s disease

 

STG

EC

 

AD cases

AD controls

AD cases

AD controls

Total number

99

91

90

84

Sex

 Male/female ratio

50/49

51/40

46/44

44/40

 p-value1

0.5360

0.9875

Age at death (years)

 Average (±SD)

81.59 (8.03)

77.48 (13.76)

82.04 (7.76)

77.70 (13.93)

 Median (IQR)

83.00 (77.5-87.00)

81.00 (68.50–88.50)

83.00 (78.00–87.75)

81.00 (68.75–89.00)

 Range

61-95

41-100

61-95

41-100

p-value2

0.0142

0.0131

PMI (h)

 Average (±SD)

57.07 (30.56)

48.41 (30.95)

56.43 (30.56)

49.01 (32.07)

 Median (IQR)

48 (30–73.75)

48 (24–48)

48.00 (30–72)

48.00 (24–52)

 Range

9–140

5–168

9–140

5–168

p-value2

0.0540

0.1209

RIN value

 Average (±SD)

3.03 (1.21)

4.19 (1.39)

2.89 (1.05)

3.05 (1.17)

 Median (IQR)

2.60 (2.30–3.25)

4.00 (2.95–5.20)

2.65 (2.025–3.775)

3.050 (2.1–3.8)

 Range

1.20–7.80

2.10–7.60

1.3–6.0

1.2–6.3

p-value2

<0.001

0.3513

RNA A260/280

 Average (±SD)

1.90 (0.04)

1.93 (0.04)

1.94 (0.03)

1.95 (0.04)

 Median (IQR)

1.89 (1.86–1.94)

1.93 (1.91–1.95)

1.94 (1.91–1.96)

1.95 (1.94–1.96)

 Range

1.80–1.99

1.80–2.00

1.84–2.01

1.77–2.06

p-value2

<0.001

0.0068

Braak Stage

 Stage 0

0

6

0

5

 Stage I/II

0

72

0

66

 Stage III

0

6

0

6

 Stage IV

8

0

8

0

 Stage V/VI

91

0

82

0

 n.a.

0

7

0

7

  1. STG superior temporal gyrus, EC entorhinal cortex, 1 Pearson’s Chi-squared test with Yates’ continuity correction, 2 Welch Two Sample t test, PMI post-mortem interval, RIN RNA integrity, RNA A260/280 the ratio of absorbance at 260 nm and 280 nm, n.a. not available.