Variable Column



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The file IMMUN_97.DAT contains data from the 1997 follow-up (Cycle 5) examination that were used to perform the exposure analyses for the Immunology chapter (Chapter 17 – 1997 follow-up report).


Variable

Column

Variable Type

Comment

SEQNO

1-5

Character

AFHS participant identification

EXPGP

15-19

Character

Exposure group [a) RH = Ranch Hand; b) C = Comparison]

EXPI

20

Numeric

Exposure group [1 = Ranch Hand; 2 = Comparison]

BDATE

21-30

Character

Date of birth (month/day/year)

AGE

31-36

Numeric

Age at the 1997 physical exam (years)

AGEGP

37-50

Character

Age at the 1997 physical exam [1) BORN < 1942; 2) BORN >= 1942]

AGEI

51

Numeric

Age at the 1997 physical exam [1 = born before 1942; 2 = born in or after 1942]

RACEGP

52-56

Character

Race [1) BL = Black; 2) NB = non-Black]

RACEI

57

Numeric

Race [1 = Black; 2 = non-Black]

OCCGP

58-63

Character

Occupation [1) OFF = officer; 2) EFL = enlisted flyer; 3) EGC = enlisted groundcrew]

OCCI

64

Numeric

Occupation [1 = officer; 2 = enlisted flyer; 3 = enlisted groundcrew]

CURCIG

65-70

Numeric

Current cigarette smoking (cigarettes/day) [. = missing]

PCKYRS

71-77

Numeric

Lifetime cigarette smoking history (pack-years) [. = missing]

CURCIGGP

78-89

Character

Current cigarette smoking (cigarettes/day); [1) 0 – NEVER = never smoked; 2) 0 – FORMER = former smoker; 3) >0 – 20; 4) >20; ‘ ‘ = missing]

CURCIGI

90

Numeric

Current cigarette smoking (cigarettes/day); [1 = 0 (never smoked); 2 = 0 (former smoker); 3 = >0 – 20; 4 = >20; . = missing]

PCKYRSGP

91-100

Character

Lifetime cigarette smoking history (pack-years)[1) 0; 2) >0 – 10; 3) >10; ‘ ‘ = missing]

PCKYRSI

101

Numeric

Lifetime cigarette smoking history (pack-years) [1 = 0; 2 = >0 – 10; 3 = >10; . = missing]

DRKYR

102-108

Numeric

Lifetime alcohol history (drink-years) [. = missing]

CALC

109-114

Numeric

Current alcohol use (drinks/day) [. = missing]

CALCGP

115-123

Character

Current alcohol use (drinks/day) [1) 0 – 1; 2) >1 – 4; 3) >4; ‘ ‘ = missing]

CALCI

124

Numeric

Current alcohol use (drinks/day) [1 = 0 – 1; 2 = >1 – 4; 3 = >4; . = missing]

DRKYRGP

125-134

Character

Lifetime alcohol history (drink-years) [1) 0; 2) >0 – 40; 3) >40; ‘ ‘ = missing]

DRKYRI

135

Numeric

Lifetime alcohol history (drink-years) [1 = 0; 2 = >0 – 40; 3 = >40; . = missing]

EXERCGP

136-152

Character

Physical activity index [SEDENTARY (<1.45 kcal/kg/day); MODERATELY ACTIVE (1.45 - <2.95 kcal/kg/day); ACTIVE (2.95 kcal/kg/day); ‘ ‘ = missing]

EXERCI

153

Numeric

Physical activity index [1 = sedentary (<1.45 kcal/kg/day); 2 = moderately active (1.45 - <2.95 kcal/kg/day); 3 = active (2.95 kcal/kg/day); . = missing]

AIIMSP

154

Character

Taking anti-inflammatory or immunosuppressant medication [Y = yes; N = no]

XRAYCHEM

155

Character

Recently received x-ray treatment or chemotherapy for cancer [Y = yes; N = no]

HIV

156

Character

Tested positive for HIV [Y = yes; N = no]

ID

157

Character

Exposure group (for participants with a dioxin assay) [C = Comparison; R = Ranch Hand; ‘ ‘ = no dioxin assay]

REPORT

158-160

Character

Results of dioxin analysis (for participants with a dioxin assay and a good result) [G= good result; GND = good result, below limit of detection; ‘ ‘ = missing]

CURRENT

161-166

Numeric

1987 lipid-adjusted dioxin level (actual measurement or 1987 level extrapolated from dioxin measurement closest to time of duty in Southeast Asia - for participants with a dioxin assay and a good result) (parts per trillion (ppt)) [. = missing]

REPTYR

167-168

Character

Year from which assay is used for dioxin determination (for participants with a dioxin assay and a good result) [87 = 1987; 92 = 1992; 97 = 1997; P = pilot test (conducted in 1987) ; ‘ ‘ = missing]


INITIAL

169-175

Numeric

Initial dioxin estimate (parts per trillion (ppt)), extrapolated from 1987 or recent lipid-weight dioxin measurement for Ranch Hands with a 1987 or recent measurement > 10 ppt [. = missing or not calculated]

LOGINIT

176-192

Numeric

Log (base 2) of initial dioxin for Ranch Hands with a 1987 or recent measurement > 10 ppt [. = missing or not calculated]

PBFDBDRW

193-207

Numeric

Body fat (percent) at time of dioxin blood draw for participants with a dioxin assay and a good result [. = missing]

LGINITGP

208-216

Character

Log (base 2) of initial dioxin for Ranch Hands with a 1987 or recent measurement > 10 ppt [1) LOW (initial dioxin: 27 - 63 ppt); 2) MEDIUM (initial dioxin: >63 – 152 ppt); 3) HIGH (initial dioxin: >152 ppt); ‘ ‘ = missing or not calculated]

LGINITI

217

Numeric

Log (base 2) of initial dioxin for Ranch Hands with a 1987 or recent measurement > 10 ppt [1 = low (initial dioxin: 27 - 63 ppt); 2 = medium (initial dioxin: >63 – 152 ppt); 3 = high (initial dioxin: >152 ppt); . = missing or not calculated]

DXCATGP

218-228

Character

Categorized dioxin [1) COMP<=10 (Comparisons: 1987 dioxin 10 ppt); 2) RH <=10 (background Ranch Hands: 1987 dioxin 10 ppt); 3) LOW RH (Ranch Hands: 1987 dioxin > 10 ppt and initial dioxin >10   94 ppt); 4) HIGH RH (Ranch Hands: 1987 dioxin >10 ppt and initial dioxin > 94 ppt); ‘ ‘ = missing or Comparisons with 1987 dioxin > 10 ppt]

DXCAT2GP

229-239

Character

Categorized dioxin [a) RH <=10 (background Ranch Hands: 1987 dioxin 10 ppt); b) LOW RH (Ranch Hands: 1987 dioxin > 10 ppt and initial dioxin >10 - 94 ppt); c) HIGH RH (Ranch Hands: 1987 dioxin >10 ppt and initial dioxin >94 ppt); d) COMP<=10 (Comparisons: 1987 dioxin 10 ppt); ‘ ‘ = missing or Comparisons with 1987 dioxin > 10 ppt]

DXCAT3GP

240-255

Character

Categorized dioxin [1) COMP<=10 (Comparisons: 1987 dioxin 10 ppt); 2) RH <=10 (background Ranch Hands: 1987 dioxin 10 ppt); 3) LOW + HIGH RH (Ranch Hands: 1987 dioxin > 10 ppt and initial dioxin > 10 ppt); ‘ ‘ = missing or Comparisons with 1987 dioxin > 10 ppt]

DXCATI

256

Numeric

Categorized dioxin [1 = Comparisons: 1987 dioxin 10 ppt; 2 = background Ranch Hands: 1987 dioxin 10 ppt; 3 = low Ranch Hands: 1987 dioxin > 10 ppt and initial dioxin >10 - 94 ppt; 4 = high Ranch Hands: 1987 dioxin >10 ppt and initial dioxin > 94 ppt; . = missing or Comparisons with 1987 dioxin > 10 ppt]

DXCAT2I

257

Numeric

Categorized dioxin [1 = background Ranch Hands: 1987 dioxin 10 ppt; 2 = low Ranch Hands: 1987 dioxin > 10 ppt and initial dioxin >10 – 94 ppt; 3 = high Ranch Hands: 1987 dioxin >10 ppt and initial dioxin >94 ppt; 4 = Comparisons: 1987 dioxin 10 ppt; . = missing or Comparisons with 1987 dioxin > 10 ppt]

DXCAT3I

258

Numeric

Categorized dioxin [1 = Comparisons: 1987 dioxin 10 ppt; 2 = background Ranch Hands: 1987 dioxin 10 ppt; 3 = low plus high Ranch Hands: 1987 dioxin > 10 ppt and initial dioxin > 10 ppt; . = missing or Comparisons with 1987 dioxin > 10 ppt]

LGCURRGP

259-267

Character

For Ranch Hands with a dioxin assay and a good result: [1) LOW (1987 dioxin: 7.9 ppt); 2) MEDIUM (1987 dioxin > 7.9 – 19.6 ppt); 3) HIGH (1987 dioxin > 19.6 ppt); ‘ ‘ = missing (includes Comparisons)]

LGCURRI

268

Numeric

For Ranch Hands with a dioxin assay and a good result: [1 = low (1987 dioxin: 7.9 ppt); 2 = medium (1987 dioxin: >7.9 – 19.6 ppt); 3 = high (1987 dioxin >19.6 ppt); . = missing (includes Comparisons)]

LOGCURR

269-284

Numeric

Log (base 2) of (1987 dioxin + 1) for Ranch Hands with a dioxin assay and a good result [. = missing (includes Comparisons)]

BFAT97

285-290

Numeric

1997 body fat (percent)

CD3CELL

291-294

Numeric

CD3+ cells (T cells) (cells/mm3) [. = participant not designated for cell surface marker measurement]

CD4CELL

295-298

Numeric

CD4+ cells (Helper T cells) (cells/mm3) [. = participant not designated for cell surface marker measurement]

CD8CELL

299-302

Numeric

CD8+ cells (Suppressor T cells) (cells/mm3) [. = participant not designated for cell surface marker measurement]

CD1656

303-306

Numeric

CD16+56+ cells (Natural killer cells) (cells/mm3) [. = participant not designated for cell surface marker measurement]

CD20CLL

307-310

Numeric

CD20+ cells (B cells) (cells/mm3) [. = missing or participant not designated for cell surface marker measurement]

CD34CLL

311-314

Numeric

CD3+CD4+ cells (Helper T cells) (cells/mm3) [. = participant not designated for cell surface marker measurement]

ABSLYMP

315-319

Numeric

Absolute lymphocyte count (cells/mm3)

IGG

320-323

Numeric

IgG (mg/dl)

IGM

324-327

Numeric

IgM (mg/dl)

IGA

328-331

Numeric

IgA (mg/dl) (observations below detection limit set equal to smallest detected value (7 mg/dl))

IGABDL

332-333

Character

IgA [DT = observation at or above detection limit; ND = observation below detection limit)]

LPANAGP

334

Character

Lupus panel: Antinuclear antibody (ANA) [N = normal (absent); A = abnormal (present)]

LPANAI

335

Numeric

Lupus panel: Antinuclear antibody (ANA) [1 = normal (absent); 2 = abnormal (present)]

LPTHYGP

336

Character

Lupus panel: Thyroid microsomal antibody [N = normal (absent); A = abnormal (present)]

LPTHYI

337

Numeric

Lupus panel: Thyroid microsomal antibody [1 = normal (absent); 2 = abnormal (present)]

LPSMOGP

338

Character

Lupus panel: MSK (mouse stomach kidney) smooth muscle antibody [N = normal (absent); A = abnormal (present)]

LPSMOI

339

Numeric

Lupus panel: MSK (mouse stomach kidney) smooth muscle antibody [1 = normal (absent); 2 = abnormal (present)]

LPMITGP

340

Character

Lupus panel: MSK (mouse stomach kidney) mitochondrial antibody [N = normal (absent); A = abnormal (present)]

LPMITI

341

Numeric

Lupus panel: MSK (mouse stomach kidney) mitochondrial antibody [1 = normal (absent); 2 = abnormal (present)]

LPPARGP

342

Character

Lupus panel: MSK (mouse stomach kidney) parietal antibody [N = normal (absent); A = abnormal (present)]

LPPARI

343

Numeric

Lupus panel: MSK (mouse stomach kidney) parietal antibody [1 = normal (absent); 2 = abnormal (present)]

LPRHMGP

344

Character

Lupus panel: Rheumatoid factor [N = normal (absent); A = abnormal (present)]

LPRHMI

345

Numeric

Lupus panel: Rheumatoid factor [1 = normal (absent); 2 = abnormal (present)]








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