Journal of Peking University (Health Sciences) ›› 2025, Vol. 57 ›› Issue (1): 178-184. doi: 10.19723/j.issn.1671-167X.2025.01.027

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Association between weight-adjusted waist index and pain: A cross-sectional study

Huili LIU1, Bei WEN2, Xue BAI3, Ming'an CHEN3, Min LI1,*()   

  1. 1. Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
    2. Department of Anesthe-siology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
    3. Department of Anesthesiology, Yan'an Hospital of Traditional Chinese Medicine, Yan'an 716000, China
  • Received:2024-07-25 Online:2025-02-18 Published:2025-01-25
  • Contact: Min LI E-mail:liminanesth@bjmu.edu.cn

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Abstract:

Objective: To investigate the relationship between the weight-adjusted waist index (WWI) and acute, subacute pain or chronic pain among American adults. Methods: There was a cross-sectional study. Data from the 1999-2004 National Health and Nutrition Examination Survey (NHANES) concerning waist circumference, weight, pain status and covariates (age, gender, race, marital status, education level and income, physical activity, alcohol consumption, smoking status, and diabetes) were extracted for analysis. Multinomial Logistic regression was conducted across the three models to investigate the associations between WWI and acute, subacute and chronic pain. Model 1 did not involve any adjustments. Model 2 involved adjustments for age, gender, race, marital status, education level, and income. Model 3 was further adjusted for physical activity, alcohol consumption, smoking, and diabetes status. Results: This study involved 12 694 participants with an average age of (50.6±18.7) years. Among all the participants, 9 614 people (75.74%) had no pain, 870 people (6.85%) experienced acute pain, 354 people (2.79%) suffered from subacute pain, and 1 856 people (14.62%) experienced chronic pain. The WWI of all the participants was (10.95±0.85) cm/$\sqrt{\mathrm{kg}}$, divided into four groups based on quartiles: Group Q1 (7.90-10.36) cm/$\sqrt{\mathrm{kg}}$, group Q2 (10.37-10.94) cm/$\sqrt{\mathrm{kg}}$, group Q3 (10.95-11.53) cm/$\sqrt{\mathrm{kg}}$ and group Q4 (11.54-15.20) cm/$\sqrt{\mathrm{kg}}$. With the increase of WWI, the analysis revealed a significant statistical difference in the participants' acute and chronic pain status (all P < 0.001). In Model 1, the prevalence of acute pain was lower in group Q2 and group Q4 compared with group Q1 (group Q2: OR=0.765, 95%CI: 0.615-0.953, P=0.017; group Q4: OR= 0.648, 95%CI: 0.503-0.835, P < 0.001). Compared with group Q1, the prevalence of chronic pain increased in group Q2, group Q3, and group Q4 (group Q2: OR =1.365, 95%CI: 1.149-1.622, P < 0.001; group Q3: OR=1.291, 95%CI: 1.082-1.541, P=0.005; group Q4: OR=1.874, 95%CI: 1.579-2.224, P < 0.001). In Model 2, compared with group Q1, an increase in chronic pain prevalence was still associated with an increase in WWI in other three groups (group Q2: OR=1.359, 95%CI: 1.137-1.624, P=0.001; group Q3: OR=1.260, 95%CI: 1.039-1.528, P=0.019; group Q4: OR=1.735, 95%CI: 1.413-2.132, P < 0.001). In Model 3, group Q4 had a 49.2% increased prevalence of chronic pain compared to group Q1 (OR = 1.492, 95%CI: 1.208-1.842, P < 0.001). However, in Models 2 and 3, no significant relationship was observed between acute pain and WWI (all P>0.05). And none of the three models identified a significant association between subacute pain and WWI (all P>0.05). Conclusion: For American adults, there was no significant correlation between WWI and acute pain or subacute pain. However, as WWI increases, so does the prevalence of chronic pain. Further validation of this conclusion through large-scale prospective studies is warranted.

Key words: Pain, Weight-adjusted waist index, Obesity, Cross-sectional study

CLC Number: 

  • R441.1

Table 1

Characteristics of participants of four groups with different pain status"

Items No pain
(n=9 614)
Acute pain
(n=870)
Subacute pain
(n=354)
Chronic pain
(n=1 856)
F/χ2 P
WWI/(cm/kg), ${\bar x}$±s 10.76±0.81 10.67±0.78 10.76±0.80 10.94±0.82 23.593 < 0.001
Age/years, n (%)         218.748 < 0.001
     < 40 3 206 (33.3) 369 (42.4) 110 (31.1) 437 (23.5)    
    40-59 2 791 (29.0) 320 (36.8) 148 (41.8) 727 (39.2)    
    ≥60 3 617 (37.7) 181 (20.8) 96 (27.1) 692 (37.3)    
Gender, n (%)         53.730 < 0.001
    Male 4 990 (51.9) 435 (50) 141 (39.8) 819 (44.1)    
    Female 4 624 (48.1) 435 (50) 213 (60.2) 1 037 (55.9)    
Race, n (%)         129.162 < 0.001
    Non-hispanic whites 4 619 (48.0) 498 (57.2) 195 (55.1) 1 110 (59.8)    
    Non-hispanic blacks 1 917 (19.9) 158 (18.2) 67 (18.9) 348 (18.8)    
    Mexican Americans 2 351 (24.5) 151 (17.4) 69 (19.5) 287 (15.4)    
    Other racial backgrounds 727 (7.6) 63 (7.2) 23 (6.5) 111 (6.0)    
Education level, n (%)         32.430 < 0.001
    Less than high school 1 917 (19.9) 163 (18.7) 67 (19.0) 427 (23.0)    
    High school 2 482 (25.9) 212 (24.4) 92 (25.9) 533 (28.7)    
    Above high school 5 195 (54.0) 495 (56.9) 195 (55.1) 895 (48.2)    
    Missing 20 (0.2) 0 (0.0) 0 (0.0) 1 (0.1)    
Marital status, n (%)         62.155 < 0.001
    Married or living with a partner 6 088 (63.3) 558 (64.1) 211 (59.6) 1 255 (67.6)    
    Widowed or divorced or separated 1 679 (17.5) 147 (16.9) 78 (22.1) 396 (21.3)    
    Never married 1 842 (19.2) 165 (19.0) 65 (18.3) 204 (11.0)    
    Missing 5 (0.0) 0 (0.0) 0 (0.0) 1 (0.1)    
PIR, n (%)         48.824 < 0.001
    <1.0 1 251 (13.0) 108 (12.4) 59 (16.7) 312 (16.8)    
    1.0-2.9 3 500 (36.4) 298 (34.2) 126 (35.6) 721 (38.8)    
    ≥ 3.0 4 863 (50.6) 464 (53.4) 169 (47.7) 823 (44.4)    
Daily physical activity, n (%)         80.103 < 0.001
    Sedentary 2 260 (23.5) 199 (22.9) 96 (27.1) 575 (31.0)    
    Mild physical activity 5 236 (54.5) 426 (49.0) 169 (47.7) 910 (49.0)    
    Moderate physical activity 1 454 (15.1) 167 (19.2) 54 (15.3) 257 (13.8)    
    Severe physical activity 655 (6.8) 77 (8.8) 35 (9.9) 109 (5.9)    
    Missing 9 (0.1) 1 (0.1) 0 (0.0) 5 (0.3)    
Smoking, n (%)         112.445 < 0.001
    Never smokers 5 052 (52.6) 419 (48.2) 173 (48.8) 753 (40.5)    
    Former smokers 2 009 (20.9) 217 (24.9) 93 (26.3) 557 (30.0)    
    Current smokers 2 539 (26.4) 234 (26.9) 88 (24.9) 545 (29.4)    
    Missing 14 (0.1) 0 (0.0) 0 (0.0) 1 (0.1)    
Alcoholic drinks per day, n (%)         28.080 < 0.001
    No 1 710 (17.8) 148 (17.0) 67 (18.9) 489 (26.4)    
    1-2 glasses 2 685 (27.9) 224 (25.7) 85 (24.1) 488 (26.3)    
    > 2 glasses 5 219 (54.3) 498 (57.3) 202 (57.0) 879 (47.3)    
Diabetes, n (%)         65.809 < 0.001
    No 8 580 (89.2) 794 (91.2) 296 (83.6) 1 561 (84.1)    
    Yes 901 (9.4) 71 (8.2) 48 (13.6) 261 (14.1)    
    Borderline 130 (1.4) 5 (0.6) 9 (2.5) 34 (1.8)    
    Missing 3 (0.0) 0 (0.0) 1 (0.3) 0 (0.0)    

Table 2

Multinomial Logistic analysis on the associations between weight-adjusted waist index and pain"

Type of pain Model Weight-adjusted waist index/(cm/$\sqrt{\mathrm{kg}}$)(Q1 group as reference)
Q2   Q3   Q4
OR(95%CI) P OR(95%CI) P OR(95%CI) P
Acute painModel 1 0.765 (0.615-0.953) 0.017   0.880 (0.708-1.093) 0.248   0.648 (0.503-0.835) 0.001
Model 2 0.873 (0.696-1.097) 0.244 1.153 (0.910-1.460) 0.239 0.974 (0.722-1.314) 0.864
Model 3 0.875 (0.697-1.099) 0.250 1.150 (0.906-1.459) 0.250 0.949 (0.705-1.277) 0.729
Subacute painModel 1 1.098 (0.775-1.557) 0.598 1.009 (0.710-1.433) 0.961 1.006 (0.679-1.491) 0.975
Model 2 1.184 (0.824-1.702) 0.361 1.121 (0.763-1.645) 0.561 1.072 (0.664-1.730) 0.776
Model 3 1.177 (0.818-1.692) 0.380 1.062 (0.722-1.562) 0.760 0.936 (0.567-1.544) 0.795
Chronic painModel 1 1.365 (1.149-1.622) < 0.001 1.291 (1.082-1.541) 0.005 1.874 (1.579-2.224) < 0.001
Model 2 1.359 (1.137-1.624) 0.001 1.260 (1.039-1.528) 0.019 1.735 (1.413-2.132) < 0.001
Model 3 1.324 (1.106-1.585) 0.002 1.186 (0.977-1.439) 0.085 1.492 (1.208-1.842) < 0.001

Table 3

Multinomial Logistic analysis on the associations between weight-adjusted waist index and chronic pain"

Variable Weight-adjusted waist index as the main variable
OR(95%CI ) P
Gender/(male as reference)
    Female 1.430 (1.251-1.636) < 0.001
Age/(< 40 years as reference)
    40-59 1.468 (1.238-1.742) < 0.001
    ≥60 0.920 (0.750-1.128) 0.421
Race/(non-hispanic whites as reference)
    Non-hispanic blacks 0.768 (0.658-0.897) 0.001
    Mexican Americans 0.412 (0.337-0.503) < 0.001
    Other racial backgrounds 0.709 (0.553-0.908) 0.007
Education level/(less than high school as reference)
    High school 0.916 (0.766-1.095) 0.335
    Above high school 0.858 (0.720-1.022) 0.088
Marital status/(married or living with a partner as reference)
    Widowed or divorced or separated 0.960 (0.818-1.126) 0.616
    Never married 0.583 (0.473-0.718) < 0.001
PIR/(< 1.0 as reference)
    1.0-2.9 0.774 (0.645-0.929) 0.006
    ≥ 3.0 0.607 (0.496-0.744) < 0.001
Daily physical activity/(sedentary as reference)
    Mild physical activity 0.805 (0.695 -.932) 0.004
    Moderate physical activity 0.833 (0.683-1.015) 0.069
    Severe physical activity 0.954 (0.723-1.258) 0.738
Smoking/(never smokers as reference)
    Former smokers 1.887 (1.602-2.222) < 0.001
    Current smokers 1.364 (1.158-1.607) < 0.001
Alcoholic drinks per day/(no drinking as reference)
    1-2 glasses 0.744 (0.628-0.881) 0.001
    > 2 glasses 0.708 (0.577-0.870) 0.001
Diabetes/(no diabetes as reference)
    Yes 1.591 (1.299-1.948) < 0.001
    Borderline 1.056 (0.647-1.724) 0.827
WWI/(Q1 group as reference)
    Q2 1.324 (1.106-1.585) 0.002
    Q3 1.186 (0.977-1.439) 0.085
    Q4 1.492 (1.208-1.842) < 0.001
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