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Table 3 Prevalences of other ECG abnormalities (except arrhythmias) in men, women and all participants

From: Prevalences and associated factors of electrocardiographic abnormalities in Chinese adults: a cross-sectional study

ECG abnormalities All participants, No. (percentage) Men (n = 13,983) Women (n = 20,982) P value# (men vs women)
20-44y 45-59y ≥60y All ages 20-44y 45-59y ≥60y All ages
ST depression and T abnormalities 4192 (10.96%) 5.26% 9.30%*** 11.44%*** 7.54% 8.36% 18.46%*** 25.19%*** 14.32% < 0.001
Q wave abnormalities 416 (1.28%) 1.35% 1.77% 1.86% 1.55% 0.78% 1.23% 1.31% 1.00% 0.003
Q wave abnormalities plus ST-T ischemic abnormalities 75 (0.16%) 0.14% 0.05% 0.55% 0.19% 0.07% 0.17% 0.30%* 0.14% 0.414
ST elevation 239 (0.92%) 2.81% 0.88%*** 0.20%*** 1.78% 0.06% 0.16% 0.02% 0.08% < 0.001
Tall R wave left 1042 (4.42%) 4.94% 7.16%* 6.28% 5.83% 1.21% 3.40%*** 7.89%*** 3.05% < 0.001
Tall R wave right 54 (0.22%) 0.23% 0.13% 0.41% 0.23% 0.28% 0.06% 0.22% 0.20% 0.765
Left/right atrial hypertrophy 64 (0.31%) 0.21% 0.43% 1.05% 0.43% 0.06% 0.27%* 0.52%* 0.21% 0.063
Left axis deviation 698 (2.13%) 1.41% 3.31%*** 4.36%*** 2.48% 0.98% 2.22%*** 3.35%*** 1.78% 0.003
Right axis deviation 254 (0.67%) 0.99% 0.72% 0.80% 0.88% 0.67% 0.31%* 0.15%*** 0.47% 0.008
Low voltage 325 (0.97%) 0.45% 0.81% 1.16% 0.68% 1.14% 1.18% 1.67% 1.24% 0.001
  1. The percentages shown above were compared by Chi-square or Fisher’s test. *, * and *** indicated the p values comparing the percentages of ECG findings in the middle/older age group with those in the young age group (* p < 0.05, ** p < 0.01, *** p < 0.001). # The p values revealed the differences comparing the percentages of ECG findings between men and women. The underlined p values indicated the significant differences (p < 0.05)