Table 2 Descriptive statistics of key variables
From: Epidemiology of gall bladder cancer and its prevalence worldwide: a meta-analysis
|  | Mean ± SE | Range | Std. Deviation | Variance | Skewness | Kurtosis |
|---|---|---|---|---|---|---|
Prevalence (%) | 7.78 ± 3.567 | 0.16–60 | 15.95 | 254.41 | 2.65 ± 0.51 | 6.57 ± 0.99 |
Study duration (years) | 7.95 ± 1.47 | 2–24 | 6.57 | 43.21 | 1.27 ± 0.51 | 0.58 ± 0.99 |
Sample size (n) | 1.4 × 103 ± 6097.972 | 200–115178 | 27,270.96 | 7.44 × 108 | 3.08 ± 0.51 | 10.4 ± 0.99 |
Mean age (year) | 59.03 ± 2.141 | 41.1–73.5 | 9.08 | 82.48 | − 0.3 ± 0.54 | − 0.39 ± 1.04 |
No. of males | 2527.88 ± 2433.843 | 0–41464 | 10,034.99 | 1.01 × 108 | 4.12 ± 0.55 | 16.99 ± 1.06 |
No. of females | 1797.41 ± 1617.303 | 3–27,642.8 | 6668.31 | 4.45 × 107 | 4.11 ± 0.55 | 16.9 ± 1.06 |