TST TABLE G.—MEFR for white adults, by smoking status, sex, and age, United States, 1971-1975 Both sexes Men Women Cigarette smoking status (by age) N n Mean SD SE N n Mean SD SE N n Mean SD SE Never smokers 25-74 6545' 62! 7894! 114! 5327 ' 41! 25-34 5733 394 7103 1895 123 2633 130 8833 1551 167 4099 264 5991 1081 94 35-44 5278 291 6744 1774 144 1669 81 8519 1710 223 3609 210 5923 1058 103 45-54 4942 353 5887 1825 110 1206 85 7805 2106 268 3736 268 5268 1185 86 55-64 3660 251 §280 1559 98 880 59 6722 1527 228 2781 192 4824 1264 98 65-74 2855 234 4317 1776 112 472 42 6526 1863 289 2394 192 3882 1394 118 Ex-smokers 25-74 6453 72 7809 120 5229 83 25-34 2811 160 7521 2246 232 1359. 66 9184 1911 295 1452 94 5964 1153 167 35-44 3086 171 7554 2241 212 1828 94 8789 2006 239 1258 77 5759 1017 131 45-54 3323 213 6773 2056 202 2345 143 7451 1901 213 978 70 5146 1398 191 55-64 2669 181 5944 2002 194 1826 130 6532 1997 220 843 51 4671 1297 245 65-74 1769 157 4986 2187 221 1270 121 5425 2267 280 499 36 3867 1463 220 Smokers 25-74 5914 52 7041 96 4897 55 25-34 8885 487 7393 2019 122 4792 239 8629 1728 133 4093 248 5847 1216 101 35-44 5849 320 6712 1974 152 3027 158 7780 1922 211 2822 162 5566 1256 94 45-54 5606 374 5762 1864 104 2743 182 5758 1819 137 2863 192 4807 1332 3 55-64 3251 192 5030 1952 147 1700 108 5834 2022 211 1551 84 4149 1421 171 65-74 933 84 3753 1862 216 534 56 4341 1961 260 400 28 2969 1373 263 = TABLE G.—Continued c Both sexes Men Women Cigarette smoking status (by age) N n Mean sD SE N n Mean SD SE N n Mean SD SE Light smokers 25-74 6068 104 7085 177 5150 114 25-34 2162 113 7006 1792 233 879 43 8347 1559 246 1283 70 6088 1294 193 35-44 1267 72 6450 1784 275 308 17 8275? 1918 530 959 55 5864 1270 =—-:192 45-54 1090 76 5656 1632 232 383 24 6718 1445 269 707 52 5080 1425-249 55-64 1043 57 4979 1611 240 313 18 6142? 1903 478 730 39 4482 1154-208 65-74 304 21 3585 1295 350 131 ll 4054" 1318 457 172 10 3228? 1157-388 Moderate smokers 25-74 5921 76 7165 120 4798 89 25-34 4269 235 7616 2146 154 2534 123 8755 1864 176 1735 112 5952 1263-164 35-44 2413 130 6819 1992 230 1214 66 8112 1734 264 1199 64 5511 1241 150 45-54 2715 179 5513 1755 137 1145 75 6533 1799 181 1570 104 4769 1286 = «144 55-64 1287 82 5100 1996 243 690 45 6122 1687 261 597 37 3917 1640 =. 299 65-74 464 44 3701 2084 373 261 28 4495 2122 466 203 16 2681? 1512 376 Heavy smokers 25-74 5755 98 6902 155 4720 5 25-34 2417 136 7356 1925 204 1363 72 8573 1544 192 1054 64 5781 1010 + =170 35-44 2148 116 6751 2053 223 1505 75 7412 1995 289 643 41 5205 1164 196 45-54 1779 118 6167 2034 214 1193 82 6945 1909 239 586 36 4581 1280-254 55-64 922 53 4989 2221 366 697 45 5410 2285 433 224 8 3679* 1327-395 65-74 154 18 4136? 2060 496 130 16 42497 2187 571 24 2 3535? 964671 NOTE: N = weighted population estimate, in th ds; n = of people in ple; SD = standard deviation; SE = standard error. * Adjusted by the direct method to reflect the age distribution of the U.S. population at the midpoint of the survey. * Does not meet standards of reliability. SOURCE: National Center for Health Statistics. Unpublished data from the first National Health Nutrition and Examination Survey (NHANES }). esl TABLE H.—Forced vital capacity for white adults, by smoking status, sex, and age, United States, 1971-1975 Both sexes Men Women Cigarette smoking status (by age) N n Mean SD SE N n Mean sD SE N n Mean SD SE Never smokers 25-74 3978' 29! 4708! 52! 3320! 24! 25-34 6733 394 4403 1052 67 2633 130 5480 759 89 4099 264 3712 464 32 35-44 5278 291 3972 814 65 1669 81 4761 759 98 3609 210 3607 530 54 45-54 4942 353 3624 782 45 1206 85 4506 795 92 3736 268 3340 522 39 55-54 3660 251 3252 820 47 880 59 4265 758 123 2780 192 2932 526 38 65-74 2875 235 2815 719 48 481 43 3867 774 127 2394 192 2603 482 43 Ex-emokers 25-74 3996 30 4703 46 3357 32 25-34 2811 150 4522 1043 101 1359 66 5335 816 118 1452 94 3760 §33 68 35-44 3086 171 4500 972 91 1828 94 5096 153 86 1258 77 3633 450 49 45-54 3323 213 4143 915 78 2345 143 4499 796 76 978 70 3291 543 79 55-64 2669 181 3862 898 94 1826 130 4239 786 95 843 61 3044 489 79 65-74 1769 157 3335 864 86 1270 121 3594 821 92 499 36 2675 568 99 Smokers 25-74 3790 26 4405 38 3236 35 25-34 8885 487 4464 977 55 4792 239 5111 784 59 4093 248 3707 539 50 35-44 5849 320 4146 851 59 3027 158 4665 750 81 2822 162 3588 546 55 45-54 5606 374 3731 814 49 2743 182 4284 678 65 2863 192 3202 §32 45 55-64 3251 192 3315 845 66 1700 108 3866 730 71 1551 84 2712 467 59 65-74 933 84 2985 870 118 534 56 3325 747 117 400 2 2533 815 85 PST TABLE H.—Continued Both sexes Men Women Cigarette smoking status (by age) N n Mean SD SE N D Mean SD SE N n Mean SD SE Light smokers 25-74 3824 54 4358 81 3342 64 25-34 2162 113 4260 857 116 879 43 4892 641 118 1283 70 3828 705 118 35-44 1267 72 3986 875 135 308 17 49227 768 235 959 55 3686 671 119 45-54 1090 76 3521 680 103 383 24 4022 555 155 707 52 3249 580 107 55-64 1043 57 3135 704 108 313 18 3866? 636 141 730 39 2822 457 87 65-74 304 21 3042 917 237 131 11 3470? 555 159 172 10 2717? 1001 347 Moderate smokers 25-74 3789 30 4454 50 3190 38 25-34 4269 235 4584 1020 74 2534 23 5217 793 80 1735 112 3660 447 55 35-44 2413 130 4145 846 90 1214 66 4671 812 125 1199 64 3612 457 66 45-54 2715 179 3658 852 73 1145 75 4357 737 111 1570 104 3147 521 57 55-64 1287 82 3312 854 99 690 45 3881 696 89 597 37 2654 453 80 65-74 464 44 2928 820 149 261 28 3327 734 172 203 16 2414? 614 173 Heavy smokers 25-74 3710 43 4364 61 3120 54 25-34 2417 136 4440 968 91 1363 72 5055 818 102 1054 64 3644 404 69 35-44 2148 116 4244 832 82 1505 75 4609 679 94 643 41 3392 440 3 45-54 1779 118 3971 758 81 1193 82 4304 638 84 586 36 3292 480 95 55-64 922 53 3524 928 151 697 45 3851 798 142 224 8 2508 ? 438 143 65-74 154 18 3036? 938 240 130 16 3189? 925 252 24 2 2223? 472 328 NOTE: N = weighted population estimate, in thousands; n = number of people in sample; SD = standard deviation; SE = standard error. ‘ Adjusted by the direct method to reflect the age distribution of the U.S. population at the midpoint of the survey. * Does not meet standards of reliability. SOURCE: National Center for Health Statistica. Unpublished data from the first National Health Nutrition and Examination Survey (NHANES 1). SCT TABLE I.—Recurring persistent cough attacks for adults, by sex, age, States, 1971-1975 and smoking status, United Men Women Smoking status Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 25-34 P 3.2 44 6.7 76 5.7 V7 4.4 6.0 84 5.7 TA 15.2 SE 1.85 2.23 1.57 4.01 1.98 2.79 1.21 2.48 1.63 1.92 2.27 4.93 n 168 78 327 72 160 94 399 121 367 119 164 81 N 3319 1593 6608 1383 3335 1875 6416 1873 6304 2239 2642 1393 35-44 P 49 8.0 13.8 9.0 5.9 22.1 5.4 5.0 89 2.3 8.0 25.8 SE 2.59 3.47 3.17 6.39 2.69 6.40 1.60 2.46 1.89 1.21 2.85 7.37 n 101 117 226 33 93 100 310 107 270 103 114 51 N 2114 2384 4412 614 1769 2029 5197 1771 4563 1776 1968 799 45-54 Py 43 9.2 10.3 6.4 12.0 10.6 49 3.0 11.5 78 99 218 SE 1.61 2.28 2.07 2.73 3.65 3.53 1.55 1.97 2.16 2.61 2.99 4.04 n 114 204 296 61 122 112 435 101 329 109 163 57 N 1568 3290 4282 810 1705 1745 5989 1458 4800 1497 2413 890 55-64 P 11 146 20.5 2.4 14.4 25.9 6.8 9.9 15.7 6.4 14.8 50.1 SE 1.06 3.21 3.27 8.88 4.33 5.87 1.65 3.35 3.46 3.17 3.93 1568 a 94 192 205 50 91 64 394 86 178 76 82 20 N 1320 2791 2990 708 1305 976 5599 1501 3014 1268 1369 378 TABLE I.—Continued Men Women Smoking status Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 65-74 P 15 175 23.7 3.6 34.4 25.4 8.7 5.4 23.1 17.2 24.8 59.9? SE 3.16 3.44 4.55 2.31 6.90 10.1 1.52 2.85 4.93 6.05 8.02 22.37 n 98 232 135 39 60 35 461 61 83 46 32 5 N 864 2232 1199 318 574 295 5487 958 952 523 362 66 25-74 P? 3.9 96 13.4 10.2 12.0 16.7 5.7 5.8 12.4 V1 11.6 31.1 SE! 0.92 151 1.30 2.22 1.66 2.31 0.66 1.25 1.19 1.32 1.84 5.63 NOTE: P = proportion; SE = standard error; n = number of people in sample; N = weighted population estimate, in thousands. ‘ Adjusted by direct method to reflect the age distribution of the U.S. population at the midpoint of the survey. * Does not meet standards of reliability. SOURCE: National Center for Health Statistics. Unpublished data from the first National Health Nutrition and Examination Survey (NHANES 1). TABLE J.—Three-week periods of increased cough or phlegm for adults, by sex, age, and smoking status, United States, 1971-1975 Women Smoking status Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 25-34 P 69 2.9 72 69 79 6.5 42 5.6 10.7 5.4 ill 18.0 SE 2.39 1.67 1.83 4.04 2.63 2.33 1.07 2.39 1.91 2.05 2.97 5.18 n 168 78 327 72 160 94 399 121 367 119 164 81 N 3319 1593 6608 1383 3335 1875 6416 1873 6304 2239 2642 1393 35-44 P 6.0 3.3 5.2 12 3.9 76 3.8 19 B.1 5.1 10.9 8.3 SE 2.43 1.98 1.68 1.20 2.08 2.86 1.54 1.37 2.01 1.89 3.67 4.20 n 101 117 226 33 93 100 310 107 270 103 114 51 N 2114 2384 4412 614 1769 2229 5197 1771 4563 1776 1968 799 45-54 P 17 3.9 6.3 0.3 5.5 98 3.5 6.1 10.8 84 8.4 216 SE 1.24 1.82 1.72 0.32 2.10 3.66 1.00 2.39 2.14 2.93 2.72 6.49 n 114 204 296 61 122 112 435 101 329 109 163 57 N 1568 3290 4282 810 1706 1745 5989 1458 4800 1497 2413 890 55-64 P 12 2.9 114 6.8 10.2 16.2 6.6 13.7 14.7 7.0 13.1 46.2 SE 0.91 1.33 2.61 4.00 4.07 5.39 1.63 4.88 3.57 3.44 3.96 16.61 n 94 192 205 50 91 64 394 86 178 16 82 20 N 1320 2791 2990 708 1305 976 5599 1501 3014 1268 1369 378 TABLE J.—Continued Men Smoking status Women Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 65-74 P 75 45 12.0 3.3 14.2 175 5.1 9.1 115 2.6 26.4 0.07 SE 3.10 1.38 4.11 2.55 6.01 10.31 1.25 3.47 4.24 2.55 9.80 0.0 n 98 232 135 39 60 35 461 81 83 46 32 5 N 864 2232 1199 318 574 295 5487 958 952 523 362 66 25-74 P! 46 3.4 79 3.8 76 10.5 45 69 11.0 5.9 12.9 19.5 SE! 1.04 0.93 1.02 1.43 1.31 2.04 0.63 1.34 1.26 1.18 1.84 3.86 NOTE: P = proportion; SE = standard error; n = number of people in sample; N = weighted population estimate, in thousands. 1 Adjusted by direct method to reflect the age distribution of the U.S. population at the midpoint of the survey. ? Does not meet standards of reliability. SOURCE: National! Center for Health Statistics. Unpublished data from the first National Health Nutrition and Examination Survey (NHANES 1). 6ST TABLE K.—Shortness of breath for adults, by sex, age, and smoking status, United States, 1971-1975 Men Women Smoking status Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 25-34 P 5.6 15.2 23.3 10.0 23.1 33.6 14.4 17.9 31.0 30.9 20.1 515 SE 1.99 4.97 3.20 3.81 4.01 7.21 1.92 494 3.17 5.65 3.56 7.48 n 168 78 327 72 160 94 399 121 367 119 164 81 N 3319 1593 6608 1383 3335 1875 6416 1873 6304 2239 2642 1393 35-44 P 17.1 19.9 22.9 15.6 15.9 31.2 22.5 26.5 39.0 36.4 45.3 30.3 SE 4.62 4.89 3.26 7.08 4.71 5.46 2.42 5.32 4.62 5.48 7.07 7.08 n 101 117 226 33 93 100 310 107 270 103 114 51 N 2114 2384 4412 614 1769 2029 5197 1771 4563 1776 1968 799 45-54 P 19.3 27.2 35.5 25.4 34.9 413 28.1 32.5 42.5 30.3 48.1 47.9 SE 4.07 3.58 2.99 6.35 4.64 5.40 2.85 6.05 3.93 5.01 4.95 7.57 n 114 204 296 61 122 2 435 101 329 109 163 57 N 1568 3290 4282 810 1706 1745 5989 1458 4800 1497 2413 890 55-64 P 25.6 31.3 42.2 37.7 42.4 45.2 38.0 56.8 39.0 29.8 43.1 54.6 SE 5.79 3.94 4.37 9.57 6.14 6.39 2.94 6.24 4.60 6.85 6.06 16.51 n 94 192 205 50 91 64 394 86 178 76 82 20 N 1320 2791 2990 708 1305 9761 5599 1501 3014 1268 1369 378 i > Q TABLE K.—Continued Men Women Smoking status Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 65-74 P 27.0 45.8 41.7 26.7 42.4 54.4 416 32.3 43.2 48.6 40.0 17.4? SE 5.46 4.05 4.59 787 6.86 9.12 2.92 5.63 6.70 9.64 10.85 16.12 n 98 232 135 39 60 35 461 81 83 46 32 5 N 864 2232 1199 318 574 295 5487 958 952 523 362 66 25-74 P! 17.1 25.2 31.4 21.5 29.9 39.2 270 31.8 38.2 34.1 38.2 42.4 SE! 1.89 2.38 1.75 2.84 2.31 2.74 1.27 2.82 2.08 2.59 2.88 5.07 NOTE: P = proportion; SE = standard error; n = number of people in sample; N = weighted population estimate, in thousands. ‘ Adjusted by direct method to reflect the age distribution of the U.S. population at the midpoint of the survey. * Doss not meet standards of reliability. SOURCE: National Center for Health Statistics. Unpublished data from the first National Health Nutrition and Examination Survey (NHANES 1). 19T TABLE L.—Wheezy chest sounds of adults, by sex, age, and smoking status, United States, 1971-1975 Men Women Smoking status Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 25-34 P 2.7 13.0 15.0 11.5 12.6 22.0 7.6 11.6 17.5 12.9 14.8 29.5 SE 1.17 4,67 2.42 4.43 2.72 6.14 1.46 3.54 2.33 3.13 2.94 6.13 n 168 78 327 72 160 94 399 121 367 119 164 81 N 3319 1593 6608 1383 3335 1875 6416 1873 6304 2239 2642 1393 35-44 P 14.0 51 18.4 13.6 12.3 25.2 19 VT 16.4 99 219 179 SE 4.72 2.12 3.28 6.14 4.03 5.61 1.83 2.98 2.56 3.77 4.53 4.89 n 101 117 226 33 93 100 310 107 270 103 114 51 N 2114 2384 4412 614 1769 2029 5197 1771 4563 1776 1968 799 45-54 P 43 12.3 18.8 10.2 23.2 18.7 8.5 5.3 22.7 12.9 24.1 35.7 SE 1.97 2.60 2.60 3.99 4.05 4.13 1.39 1.82 2.98 3.59 4.37 6.24 n 114 204 296 61 122 112 435 101 329 109 163 57 N 1568 3290 4282 810 1706 1745 5989 1458 4800 1497 2413 890 55-64 P 12.0 13.6 25.9 29.9 26.6 22.1 12.7 22.0 27.3 19.5 31.0 40.0 SE 4.24 2.50 4.46 9.22 5.87 6.10 2.09 5.93 3.64 4.98 5.21 14.00 n 94 192 205 50 91 64 394 86 178 76 82 20 N 1320 2791 2990 708 1305 976 5599 1501 3014 1268 1369 378 bt TABLE L.—Continued Men Women Smoking status Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 65-74 P 5.0 20.7 33.1 34.7 31.6 35.6 15.1 215 28.6 34.6 18.1 39.0? SE 2.04 3.00 5.25 10.10 747 9.91 2.16 4.78 5.60 8.99 6.69 21.96 n 98 232 135 39 60 35 461 81 83 46 32 5 N 864 2232 1199 318 574 295 5487 958 952 523 362 66 25-74 P! 74 12.1 20.6 176 19.6 23.5 98 12.6 21.7 16.4 21.7 31.6 SE’ 1.33 1.83 1.42 2.68 1.98 2.69 0.82 1.68 1.49 2.01 1.88 4.80 NOTE: P = proportion; SE = standard error; n = number of people in sample; N = weighted population estimate, in thousands. ‘ Adjusted by direct method to reflect the age distribution of the U.S. "Does not meet standards of reliability. population at the midpoint of the survey. SOURCE: National Center for Health Statistics. Unpublished data from the first National Health Nutrition and Examination Survey (NHANES 1). egt TABLE M.—Diminished or absent breath sounds of adults, by sex, age, and smoking status, United States, 1971-1975 Smoking status Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 25-34 P 18 0.0 0.3 04 0.0 0.7 0.1 0.0 0.6 0.3 0.0 2.2 SE 1.76 0.0 0.21 0.36 0.0 0.71 0.07 0.0 0.51 0.31 0.0 2.21 n 168 78 327 72 160 94 399 121 367 119 164 81 N 3319 1593 6608 1383 3335 1875 6416 1873 6304 2239 2642 1393 35-44 P 0.6 0.5 0.6 0.0 0.7 0.6 0.3 0.2 2.3 0.4 3.4 3.5 SE 0.61 0.47 0.55 0.0 0.73 0.57 0.26 0.22 1.58 0.44 3.33 3.39 n 101 17 226 33 93 100 310 107 270 103 1l4 51 N 2114 2384 4412 614 1769 2029 5197 1771 4563 1776 1968 799 45-54 P 0.7 10 5.9 0.4 9.8 47 0.8 2.4 14 10 1.6 15 SE 0.55 0.53 al 0.41 3.33 2.64 0.64 1.87 0.56 0.36 0.82 1.24 n 114 204 296 61 122 112 435 101 329 109 163 57 N 1568 3290 4282 810 1706 1745 5989 1458 4800 1497 2413 890 55-64 P 25 5.7 12.4 8.4 13.0 14.4 0.8 41 3.36 2.7 3.9 35 SE 2.12 1.66 3.15 4.75 4.57 4.99 0.53 2.51 1.44 1.82 2.40 3.55 n 94 192 205 50 91 64 394 86 178 76 82 20 N 1320 2791 2990 708 1305 976 5599 1501 3014 1268 1369 378 TABLE M.—Continued Men Women Smoking status Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 65-74 P 88 97 179 13.9 25.2 88 24 45 2.7 3.3 2.3 0.0? SE 3.53 2.57 3.76 8.10 5.86 45 0.81 2.63 1.58 2.34 2.27 0.0 n 98 232 135 39 60 35 461 81 83 46 32 5 N 864 2232 1199 318 574 295 5487 958 952 523 362 66 25-74 Pp! 2.2 2.44 58 3.3 15 5.0 0.7 19 19 1.32 21 23 SE' 0.72 0.46 0.95 1.33 1.47 1.06 0.20 0.71 0.46 0.49 0.88 1.16 NOTE: P = proportion; SE = standard error; n = number of people in sample; N = weighted population estimate, in thousands. ‘ Adjusted by direct method to reflect the age distribution of the U.S. population at the midpoint of the survey. * Does not meet standards of reliability. SOURCE: National Center for Health Statistics. Unpublished data from the first National Health Nutrition and Examination Survey (NHANES 1). got TABLE N.—Wheeze of adults, by sex, age, and smoking status, United States, 1971-1975 Men Women Smoking status Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 25-34 P 0.0 12 17 11 16 2.2 0.4 0.0 0.7 0.0 13 0.0 SE 0.0 124 0.77 1.06 1.25 1.28 0.29 0.0 0.37 0.0 0.79 0.0 n 168 78 327 72 160 94 399 121 367 119 164 81 N 3319 1593 6608 1383 3335 1875 6416 1873 6304 2239 2642 1393 35-44 P 0.0 1.0 13 0.0 0.9 2.1 0.3 0.0 3.2 0.0 3.6 96 SE 0.0 0.75 0.67 0.0 0.89 1.22 0.26 0.0 1.28 0.0 1.50 4.97 a 101 117 226 33 93 100 310 107 270 103 114 51 N 2114 2384 4412 614 1769 2029 5197 1771 4563 1776 1968 799 45-54 P 0.0 1.2 25 0.0 45 18 0.3 0.0 24 08 3.3 2.5 SE 0.0 1.02 0.93 0.0 2.13 1.27 0.33 0.0 0.94 0.78 1.40 1.76 n 114 204 296 61 122 112 435 101 329 109 163 57 N 1568 3290 4282 810 1706 1745 5989 1458 4800 1497 2413 890 55-64 P 0.0 0.4 5.6 23 3.3 10.9 0.1 0.0 1.7 08 14 58 SE 0.0 0.37 1.76 1.95 1.69 4.48 0.05 0.0 0.95 0.77 1.18 5.78 n 94 192 205 50 91 64 394 86 178 76 82 20 N 1320 2791 2990 708 1305 976 5599 1501 3014 1268 1369 378 i TABLE N.—Continued Men Smoking status Smoking status Never Former Current Light Moderate Heavy Never Former Current Light Moderate Heavy 65-74 P 2.6 10.0 0.0 114 18.4 1.0 19 3.6 2.7 16 20.9? SE 0.0 lll 3.75 0.0 5.27 10.98 0.56 1.85 2.14 2.66 1.64 18.53 n 98 232 135 39 60 35 46] 81 83 46 32 5 N 864 2232 1199 318 574 295 5487 958 952 523 362 66 25-74 Pp! 0.0 1.2 3.4 0.7 3.5 55 0.4 0.2 2.1 0.7 2.3 6.3 SE 0.0 0.46 0.71 0.46 0.92 1.65 0.14 0.25 0.45 0.41 0.48 2.79 NOTE: P = proportion; SE = standard error; n = number of people in sample; N = weighted population estimate, in thousands. ‘ Adjusted by direct method to reflect the age distribution of the U.S. population at the midpoint of the survey. ? Does not meet standards of reliability. SOURCE: National Center for Health Statistics. Unpublished data from the first National Health Nutrition and Examination Survey (NHANES 1). References ABBOUD, R.T., MORTON, J.W. Comparison of maximal mid-expiratory flow, flow volume curves, and nitrogen closing volumes in patients with mild airway obstruction. American Review of Respiratory Disease 111(4): 405-417, April 1975. AMERICAN COLLEGE OF CHEST PHYSICIANS-AMERICAN THORACIC SOCI- ETY. 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