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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: Environ Res. 2015 Jul 15;142:288–296. doi: 10.1016/j.envres.2015.06.035

Table 1.

Characteristics of study population

Characteristics (n = 52)
Mean ± SD Min-Max
Age (years) 26 ± 4 18–35
Gestational age at enrollment (wk) 12 ± 3
N (%)
7–16
Ethnicity
 Thai 11 (21.1%)
 Others (Tai Yai, Palong Chinese Yunnan, Lahu and Akha) 41 (78.9%)
Marital status
 married 5 (9.6%)
 living as married 47 (90.4%)
Income (poverty level = 2,400 Baht/month)
 below poverty 31 (59.6%)
 above poverty 18 (34.6%)
 not known 3 (5.8%)
Level of education
 no education 33 (63.5%)
 primary school 9 (17.3%)
 secondary school 2 (3.8%)
 high school 7 (13.5%)
 College/University 1 (1.9%)
Worked during pregnancy
 1st trimester 50 (96.2%)
 2nd trimester 37 (71.1%)
 3rd trimester 9 (17.3%)
Sprayed pesticides by themselves during pregnancy
 1st trimester 14 (26.9%)
 2nd trimester 7 (13.5%)
 3rd trimester 0 (0%)
Helped another person spraying pesticide during pregnancy (such as holding spray hose)
 1st trimester 44 (84.6%)
 2nd trimester 35 (67.3%)
 3rd trimester 9(17.3%)
Delivery 51 (98.2%)
  full-term 1 (1.8%)
  pre-term
Mean ± SD Min-Max
Newborn body weight (g) 2,857 ± 428 1,560–3,750
Newborn body length (cm) 51.4 ± 2.8 41.0–56.0
Newborn head circumference (cm) 32.7 ± 1.6 28.0–37.0