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Table 2 Heterogeneity comparison between sample 1 and sample 2

From: Is geriatric depression scale a valid instrument to screen depression in Chinese community-dwelling elderly?

  Sample 1 Sample 2 P
Sample size (n, %) 1801 (100.0) 1800 (100.0) -
Age (y, mean ± sd) 66.6 ± 7.1 66.7 ± 7.1 0.6764
Gender (n, %)
 Male 791 (43.9) 821 (45.6) 0.3075
 Female 1010 (56.1) 979 (54.4)
GDS-30 score (P50, (P25, P75)) 4 (2, 9) 4 (2, 9) 0.7011§
Depressive symptoms (n, %)
 No 1626 (90.3) 1641 (91.2) 0.8870
 Yes 175 (9.7) 159 (8.8)
  1. Independent-samples t-test
  2. Chi-square test
  3. §Mann-Whiteney U test