Table 7.

Comparison of the bone biochemistry parameters according to work experience

Biochemistry parameter	Work experience (years)	N	Mean	P-value
Ca	10–19	32	9.27±0.27	0.872*
	20 and older	15	9.29±0.50
P (mg/dL)	10–19	32	2.85±0.44	0.281*
	20 and older	15	2.71±0.31
ALP (U/L)	10–19	32	84.93±13.63	0.044*
	20 and older	15	94.67±23.63
Creatine (mg/dL)	10–19	32	0.90±0.11	0.69*
	20 and older	15	0.89±0.08
RANK (pg/mL)	10–19	32	96.89±41.96	0.182*
	20 and older	15	113.56±82.20
RANKL (pmol/L)	10–19	32	391.33±109.84	0.166*
	20 and older	15	443.78±168.88

Notes:

^*Independent t-test was applied. Bold P-value defines the significant difference (P<0.05). The data were given as mean ± standard deviation.

Abbreviations: ALP, alkaline phosphatase; P, phosphor.