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. Author manuscript; available in PMC: 2018 May 1.
Published in final edited form as: Neurotoxicology. 2017 Feb 7;60:125–133. doi: 10.1016/j.neuro.2017.02.002

Table 1. Participant characteristics by exam date. N=308.

Days after Mother's Day harvest (quintiles)
1st 2nd 3rd 4th 5th P-Trend
N 61 62 62 62 61
Range (days) 63.4-75.5 75.6-82.7 82.8-90.4 90.5-96.5 96.6- 99.6
Age, years 6.2 (1.5) 6.5 (1.4) 6.6 (1.5) 7.0 (1.7) 6.9 (1.7) 0.01
Sex, male 51 45 55 60 46 0.93
Race, mestizo 90 69 52 71 98 0.87
Race, indigenous 7 29 45 27 2 0.79
Monthly household incomea 3.0 (0.8) 3.7 (0.7) 3.3 (0.6) 2.8 (0.7) 2.8 (0.9) 0.01
Maternal education, years 7.6 (4.4) 8.6 (4.4) 5.7 (2.8) 6.8 (3.2) 7.6 (3.7) 0.81
Flower worker cohabitation 52 56 73 16 49 0.01
Home distance to nearest flower plantation, m 669 (472) 245 (145) 347 (248) 461 (324) 521 (282) 0.24
Height-for-age z-score, SD -1.11 (0.78) -1.05 (0.89) -1.74 (0.94) -1.22 (0.98) -1.08 (1.04) 0.98
Hemoglobin, g/L 12.0 (1.3) 12.7 (0.9) 12.8 (1.3) 12.6 (1.0) 13.1 (1.1) <0.01
Acetylcholinesterase, U/mL 2.97 (0.51) 3.10 (0.45) 3.12 (0.50) 3.13 (0.45) 3.38 (0.44) <0.01

Table entries are percentage or mean (SD)

a

Monthly income categories (USD): 1= 0-50, 2= 51-150, 3=151-300, 4=301-500, 5= 501-1000, 6=>1000