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Table 2 Comparisons of characteristics among different groups

From: Role of no table salt on hypertension and stroke based on large sample size from National Health and Nutrition Examination Survey database

Variables No Hypertension or Stroke (n = 9297) Hypertension (n = 4661) Stroke (n = 340) Hypertension and Stroke (n = 1054) Statistic P-value
Age (years), n (%)      χ2 = 3036.017  < .001
 20–39 4352 (46.81) 628 (13.47) 47 (13.82) 35 (3.32)   
 40–59 3182 (34.23) 1593 (34.18) 116 (34.12) 273 (25.90)   
 60–79 1539 (16.55) 2022 (43.38) 135 (39.71) 578 (54.84)   
 ≥ 80 224 (2.41) 418 (8.97) 42 (12.35) 168 (15.94)   
Gender, n (%)      χ2 = 5.701 0.127
 Male 4420 (47.54) 2256 (48.40) 158 (46.47) 468 (44.40)   
 Female 4877 (52.46) 2405 (51.60) 182 (53.53) 586 (55.60)   
Race, n (%)      χ2 = 354.297  < .001
 Mexican American 1317 (14.17) 450 (9.65) 40 (11.76) 99 (9.39)   
 Other Hispanic 955 (10.27) 411 (8.82) 29 (8.53) 98 (9.30)   
 Non-Hispanic White 3629 (39.03) 1937 (41.56) 183 (53.82) 474 (44.97)   
 Non-Hispanic Black 1790 (19.25) 1359 (29.16) 52 (15.29) 280 (26.57)   
 Other 1606 (17.27) 504 (10.81) 36 (10.59) 103 (9.77)   
Education level, n (%)      χ2 = 361.767  < .001
 Less than 9th grade 556 (5.98) 352 (7.55) 38 (11.18) 140 (13.28)   
 9-11th grade 982 (10.56) 567 (12.16) 67 (19.71) 182 (17.27)   
 High school graduate 1950 (20.97) 1119 (24.01) 86 (25.29) 285 (27.04)   
 Some college 2933 (31.55) 1549 (33.23) 89 (26.18) 329 (31.21)   
 College graduate 2876 (30.93) 1074 (23.04) 60 (17.65) 118 (11.20)   
Marital Status, n (%)      χ2 = 1041.964  < .001
 Married 4725 (50.82) 2555 (54.82) 159 (46.76) 440 (41.75)   
 Widowed 325 (3.50) 508 (10.90) 44 (12.94) 208 (19.73)   
 Divorced 866 (9.31) 607 (13.02) 55 (16.18) 200 (18.98)   
 Separated 280 (3.01) 172 (3.69) 19 (5.59) 49 (4.65)   
 Never married 2180 (23.45) 528 (11.33) 41 (12.06) 109 (10.34)   
 Living with partner 921 (9.91) 291 (6.24) 22 (6.47) 48 (4.55)   
BMI (kg/m2), n (%)      χ2 = 815.638  < .001
 < 18.5 176 (1.89) 34 (0.73) 3 (0.88) 8 (0.76)   
 18.5–24.9 3059 (32.90) 745 (15.98) 82 (24.12) 169 (16.03)   
 25.0–29.9 3016 (32.44) 1501 (32.20) 89 (26.18) 262 (24.86)   
 ≥ 30.0 3046 (32.76) 2381 (51.08) 166 (48.82) 615 (58.35)   
PIR, M (Q1,Q3) 2.27 (1.15,4.30) 2.20 (1.18,4.25) 1.35 (0.91,2.48) 1.42 (0.88,2.48) χ2 = 260.784  < .001
Diabetes, n (%)      χ2 = 1697.862  < .001
 Yes 556 (5.98) 1046 (22.44) 90 (26.47) 452 (42.88)   
 No 8585 (92.34) 3414 (73.25) 240 (70.59) 556 (52.75)   
 Borderline 156 (1.68) 201 (4.31) 10 (2.94) 46 (4.36)   
CVDs, n (%)      χ2 = 1478.690  < .001
 Yes 9052 (97.36) 4058 (87.06) 269 (79.12) 632 (59.96)   
 No 232 (2.50) 585 (12.55) 68 (20.00) 406 (38.52)   
 Unknown 13 (0.14) 18 (0.39) 3 (0.88) 16 (1.52)   
Reduce salt, n (%)      χ2 = 2010.879  < .001
 Yes 922 (9.92) 1712 (36.73) 64 (18.82) 460 (43.64)   
 No 6251 (67.24) 1882 (40.38) 162 (47.65) 270 (25.62)   
 Unknown 2124 (22.85) 1067 (22.89) 114 (33.53) 324 (30.74)   
Type of table salt used, n (%)      χ2 = 207.986  < .001
 Ordinary Salt 6394 (68.77) 2755 (59.11) 239 (70.29) 576 (54.65)   
 Other Salt 305 (3.28) 263 (5.64) 15 (4.41) 81 (7.69)   
 No table salt 2598 (27.94) 1643 (35.25) 86 (25.29) 397 (37.67)   
  1. BMI body mass index, PIR poverty income ratio, CVDs cardiovascular diseases