Table 1.

Participant characteristics.

Participant characteristics	All participants (n = 271)	Cohabitation with flower plantation worker (n = 138; 51%)	Cohabitation with nonagricultural worker (n = 133; 49%)	p-Value
Demographic and socioeconomic status
Age (years)	6.6 ± 1.6	6.4 ± 1.6	6.8 ± 1.6	0.02
Male sex	51	51	52	0.85
Race
Mestizo	76	68	84	0.002
Indigenous	23	30	14	0.01
Other	1	1	2	0.66
Monthly incomea	3.1 ± 0.8	3.1 ± 0.7	3.1 ± 1.0	0.97
No. of smokers at home	0.26 ± 0.46	0.25 ± 0.45	0.27 ± 0.46	0.66
Residence distance to nearest flower plantation (m)	347 (186–602)	326 (170–610)	432 (208–602)	0.55
Duration of flower worker cohabitation (years)		5.2 ± 2.0		—
No. of flower workers at home		1.64 ± 1.1	0	—
No. of “bad practices”b		2.9 ± 0.9	0	—
Anthropometric and blood measurements
Height (cm)	112.1 ± 10.3	110.2 ± 10.2	114.1 ± 10.2	0.002
Height-for-age z-score	–1.26 ± 0.96	–1.41 ± 1.04	–1.10 ± 0.85	0.01
BMI (kg/m2)	16.1 ± 1.4	16.1 ± 1.1	16.2 ± 1.6	0.48
BMI-for-age z-score	0.34 ± 0.8	0.35 ± 0.71	0.32 ± 0.88	0.77
Systolic blood pressure (mmHg)	93.2 ± 8.3	92.2 ± 7.6	94.2 ± 8.9	0.05
Systolic blood pressure (z-score)	–0.03 ± 0.72	–0.06 ± 0.67	0.00 ± 0.77	0.45
Diastolic blood pressure (mmHg)	49.4 ± 7.3	49.3 ± 7.6	49.6 ± 7.0	0.76
Diastolic blood pressure (z-score)	–0.50 ± 0.62	–0.47 ± 0.66	–0.52 ± 0.56	0.53
Heart rate (beats/min)	85.1 ± 12.4	86.4 ± 12.4	83.8 ± 12.4	0.08
Acetylcholinesterase (U/mL)	3.14 ± 0.49	3.08 ± 0.50	3.20 ± 0.47	0.05
Hemoglobin (g/dL)	12.6 ± 1.2	12.5 ± 1.3	12.7 ± 1.0	0.15
Values are mean ± SD, percent, or median (25th–75th percentile). aMonthly income categories (US$): 1 = 0–50, 2 = 51–150, 3 = 151–300, 4 = 301–500, 5 = 501–1,000, 6 = > 1,000. bn = 228.