Table II.

Maximum Workload, Occupational Risk Factors, and Acute Kidney Injury (n=471)

	Light (100 - 1,534 cpm)		Moderate (1,535-3,691 cpm)		Vigorous (≥3,692 cpm)		p-valueg	Row Total
	n	%	n	%	n	%
Total Sample (n=471)	21	4.5	357	75.8	93	19.7
Sex							0.10
Male	11	3.7	220	73.8	67	22.5		298
Female	10	5.8	137	79.2	26	15.0		173
Volume Depletionb							0.02
No body mass change	2	11.1	13	72.2	3	16.7		18
Gained any body mass	3	2.8	89	82.4	16	14.8		108
Lost <1.5% body mass	15	5.1	224	76.2	55	18.7		294
Lost ≥1.5% body mass	1	2.0	30	60.0	19	38.0		50
Change in Core Body Temperaturec							0.59
< 1°C	14	4.8	226	76.9	54	18.4		294
≥ 1°C	7	4.0	131	74.0	39	22.0		177
Payment Method							0.23
Piece-Rate	19	5.2	279	76.2	68	18.6		366
Hourly/Salary	2	1.9	78	74.3	25	23.8		105
Acute Kidney Injury							0.03
No injury	19	4.7	313	78.1	69	17.2		401
Stage 1	2	3.4	37	62.7	20	33.9		59
Stage 2	0	0.0	7	63.6	4	36.4		11
Year of Data Collection							0.13
2014	10	4.2	191	79.6	39	16.3		240
2015	11	4.8	166	71.9	54	23.4		231

^aWorkload categorized by sustained 3-minute maximum counts per minute from accelerometer data

^bVolume depletion estimated by percent change in body mass (post-shift weight - pre-shift weight ) x 100%/Pre-shift weight

^cEstimated from elevation from baseline reading from ingested sensor

^dEstimated from serum creatinine measurements and classified per Kidney Disease Improving Global Outcomes

^eStage 1 classified based on meeting at least one of the criteria

^gp-value based onFisher’s exact tests