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Table 1 Baseline characteristics of study participants across the 4 groups (N = 1447)

From: Combined associations of hs-CRP and cognitive function with all-cause mortality among oldest-old adults in Chinese longevity areas: a prospective cohort study

CharacteristicOveralla (n = 1447)hs-CRP ≤ 3.0 mg/L & normal cognition (n = 689)hs-CRP > 3.0 mg/L & normal cognition (n = 220)hs-CRP ≤ 3.0 mg/L & CI (n = 389)hs-CRP > 3.0 mg/L & CI (n = 149)P for trend
Age, years, mean (SD)84.7 (0.2)84.3 (0.2)83.9 (0.3)86.9 (0.7)86.5 (0.8)< 0.001
Female899 (58.7)417 (58.2)115 (52.5)277 (72.2)90 (54.7)0.369
≥1 Years of education326 (30.8)175 (31.4)54 (35.2)71 (22.1)26 (29.6)0.385
Currently married, yesb297 (37.9)195 (41.5)55 (44.5)31 (15.5)16 (23.3)< 0.001
Regular exercise, yesb182 (16.1)119 (19.3)27 (14.5)28 (8.4)8 (1.6)< 0.001
Current smoking, yesb151 (11.8)83 (14.0)28 (9.1)28 (6.9)12 (6.6)0.014
Current alcohol drinking, yesb169 (13.0)97 (15.5)23 (9.5)35 (8.3)14 (6.4)0.014
Body mass index, kg/m2, mean (SD)21.4 (0.3)21.3 (0.3)20.7 (0.5)23.2 (2.0)21.4 (0.8)0.424
Central obesity, yesbc465 (39.8)243 (40.0)74 (41.6)120 (38.4)28 (34.6)0.716
Adequate medical service, yesb1311 (94.2)643 (94.0)201 (96.0)342 (91.9)125 (94.7)0.855
  1. Values are given as No. (%) unless otherwise stated. No. was based on study samples (unweighted). Means (SD) and percentages were weighted population estimates. CI, cognitive impairment
  2. aOf 1447 participants, 46 with missing data on the weight variable were excluded for calculating weighted population estimates
  3. bNumbers of missing data ranged from 3 to 41 (8 for married status, 41 for regular exercise, 8 for current smoking, 3 for alcohol drinking, 18 for central obesity, and 6 for adequate medication)
  4. cCentral obesity (yes vs no) was defined as waist circumference (WC) ≥ 85 cm in men and WC ≥ 80 cm in women