Research ArticleOriginal Research

Associations Between Subjective Night Sweats and Sleep Study Findings

James W. Mold, Suanne Goodrich and William Orr
The Journal of the American Board of Family Medicine March 2008, 21 (2) 96-100; DOI: https://doi.org/10.3122/jabfm.2008.02.070125

Article Figures & Data

Tables

  • Table 1.

    Characteristics of the Study Population (n = 282)

    VariableMean (SD)
    Age49.13 (13.36)
    Height (inches)69.48 (4.20)
    Weight (pounds)212.69 (46.51)
    BMI31.99 (7.17)
    SexN(%)
        Male180 (63.8)
        Female102 (36.2)
    Race/ethnicity [n (%)]
        White, non-Hispanic238 (86.2)
        Black20 (7.2)
        Asian4 (1.4)
        Native American9 (3.3)
        Hispanic4 (1.4)
        Other1 (0.4)
    Marital status [n (%)]
        Married220 (78.6)
        Divorced17 (6.1)
        Separated4 (1.4)
        Widowed10 (3.6)
        Never married29 (10.4)
    Conditions [n (%)]
        Arthritis12 (4.3)
        Asthma5 (1.8)
        COPD2 (0.7)
        Diabetes mellitus7 (2.5)
        Heart disease2 (0.7)
        Hypertension15 (5.3)

    • BMI, body mass index; COPD, chronic obstructive pulmonary disorder.

  • Table 2.

    Association of Sleep-Related Variables with Night Sweats

    VariableAll Variables (n = 282; 100%)Night Sweats (n = 79; 28%)No Night Sweats (n = 203; 72%)P*
    Breathing trouble during the night113 (41.4)51 (45.1)62 (54.9)<.0001
    Snoring208 (75.6)65 (31.3)143 (68.7).03
    Crawling/creeping feeling in legs31 (11)17 (54.8)14 (45.2).003
    Legs kick during sleep26 (19.8)20 (76.9)14 (23.1).004
    Wake in am with headache80 (28.5)35 (43.8)45 (56.2).0002
    Awakened by aches/pains during the night95 (33.7)44 (46.3)51 (53.7)<.0001
    Daytime fatigue202 (72.4)68 (33.7)134 (66.3).001
    Wake up tired220 (78.9)70 (31.8)150 (68.2).002
    ESS [mean (SD)]12.29 (5.45)14.53 (5.21)11.41 (5.29)<.0001
        <1090 (33)4 (15.6)76 (84.4)
        ≥10186 (67)63 (33.9)123 (66.1).002
    AHI [mean #/hour (SD)]20.82 (24.81)20.03 (24.82)21.08 (24.81).75
        0- 4.9979 (28)23 (29.1)56 (70.9)
        5–14.9978 (28)24 (30.8)54 (69.2)
        15–29.9963 (22)17 (27)46 (73)
        30+62 (22)15 (24.2)47 (75.8).82
    PLMI [mean #/hour (SD)]4.70 (23.54)2.46 (10.13)5.55 (26.91).18
        ≤5230 (88)66 (28.7)164 (71.3)
        >532 (12)6 (18.8)26 (81.2).24
    AI [mean #/hour (SD)]17.54 (20.44)17.62 (21.42)17.50 (20.05).96
        < 15167 (59)50 (29.9)117 (70.1)
        ≥15114 (41)28 (24.6)86 (75.4).32
    SOL [mean # min (SD)]24.60 (30.75)20.97 (18.47)25.87 (34.22).12
        < 30207 (74)60 (29)147 (71)
        ≥3074 (26)18 (24.3)56 (75.7).44
    TST [mean # min (SD)]248.40 (110.89)250.99 (114.33)247.42 (109.86).82
        >6.526 (10)9 (34.6)17 (65.4)
        ≤6.5236 (90)63 (87)173 (91).39
    WASO [mean # min (SD)]259 (71.28)59.78 (49.45)75.71 (64.29).03
        <3072 (28)21 (29.2)51 (70.8)
        ≥30187 (72)51 (27.3)136 (72.7).76

    • All data shown as n (%) unless otherwise indicated.

    • * χ2 test for categorical variables; independent Student's t tests for continuous variables.

  • Table 3.

    Independent Associations Between Sleep Variables and Reported Night Sweats*

    VariableOdds Ratio (95% CI)P
    ESS1.09 (1.03–1.15).005
    Trouble breathing2.81 (1.54–5.15).0008
    Awakened by aches/pains3.21 (1.78–5.82).0001

    • * Kicking at night excluded.

    • Data determined by multivariate logistic regression. Deviance 217.02 P = .35.

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