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Table 4 The results of oxidative-antioxidation levels in employees with different individual characteristics

From: Analysis of occupational stress and its correlation with oxidative-antioxidant levels among employees of a power grid enterprise in Guangdong

Group

MDA (μM)

TAC(mM)

SOD (units)

Mean ± SD

t/F value

P value

Mean ± SD

t/F value

P value

Mean ± SD

t/F value

P value

Gender

 

−1.501

0.138

 

−0.333

0.740

 

−0.024

0.981

 Male

1.870 ± 1.176

  

1.287 ± 0.177

  

0.354 ± 0.094

  

 Female

2.171 ± 1.556

  

1.295 ± 0.159

  

0.354 ± 0.106

  

Age/years

 

6.168

< 0.001

 

2.905

0.034

 

1.681

0.170

 20~

1.815 ± 1.149

  

1.317 ± 0.176

  

0.337 ± 0.090

  

 30~

1.734 ± 1.107

  

1.274 ± 0.190

  

0.360 ± 0.093

  

 40~

2.238 ± 1.393abc

  

1.301 ± 0.142

  

0.353 ± 0.104

  

 50~

1.719 ± 1.109

  

1.253 ± 0.193a

  

0.363 ± 0.087

  

Marital Status

−2.595

0.010

 

1.594

0.112

 

−0.622

0.534

 Single

1.697 ± 0.945

  

1.309 ± 0.184

  

0.349 ± 0.100

  

 Married

1.973 ± 1.302

  

1.281 ± 0.171

  

0.355 ± 0.094

  

Education level

3.313

0.020

 

1.922

0.125

 

0.580

0.629

 High School and below

1.770 ± 1.241

  

1.236 ± 0.201

  

0.345 ± 0.095

  

 Junior college

2.126 ± 1.359d

  

1.298 ± 0.155

  

0.347 ± 0.088

  

 Undergraduate

1.915 ± 1.220

  

1.293 ± 0.180

  

0.358 ± 0.097

  

 Master and above

1.570 ± 0.901

  

1.288 ± 0.157

  

0.358 ± 0.103

  

Working years/years

4.285

0.005

 

1.012

0.387

 

1.764

0.153

  < 10

1.759 ± 1.149

  

1.293 ± 0.180

  

0.345 ± 0.090

  

 10~

2.005 ± 1.255

  

1.298 ± 0.178

  

0.348 ± 0.100

  

 20~

2.168 ± 1.369ef

  

1.292 ± 0.158

  

0.368 ± 0.102

  

 30~

1.693 ± 1.063

  

1.259 ± 0.185

  

0.356 ± 0.088

  

Work category

2.368

0.052

 

1.915

0.107

 

2.166

0.072

 Management

1.877 ± 1.141

  

1.213 ± 0.218

  

0.375 ± 0.105

  

 Maintenance

2.088 ± 1.374

  

1.269 ± 0.170i

  

0.358 ± 0.090

  

 Dispatching

1.601 ± 0.992

  

1.278 ± 0.231

  

0.395 ± 0.115

  

 Substation operation

1.771 ± 1.108

  

1.296 ± 0.175

  

0.345 ± 0.097

  

 Other

2.025 ± 1.275

  

1.325 ± 0.146

  

0.351 ± 0.091

  

Shift system

 

0.043

0.966

 

−1.417

0.157

 

−0.248

0.804

 Day shift

1.909 ± 1.219

  

1.281 ± 0.176

  

0.353 ± 0.098

  

 Shift work

1.904 ± 1.265

  

1.304 ± 0.171

  

0.356 ± 0.089

  

Monthly income/yuan

0.578

0.630

 

1.256

0.289

 

0.988

0.398

  < 5000

1.858 ± 1.346

  

1.314 ± 0.164

  

0.346 ± 0.105

  

 5000~

1.988 ± 1.285

  

1.273 ± 0.166

  

0.349 ± 0.087

  

 7000~

1.831 ± 1.064

  

1.292 ± 0.180

  

0.361 ± 0.090

  

 9000~

1.937 ± 1.325

  

1.282 ± 0.203

  

0.364 ± 0.123

  

Noise exposure

0.856

0.392

 

0.566

0.572

 

0.228

0.820

 No

1.940 ± 1.244

  

1.291 ± 0.167

  

0.355 ± 0.093

  

 Yes

1.843 ± 1.206

  

1.282 ± 0.189

  

0.353 ± 0.101

  

Electromagnetic radiation exposure

3.552

< 0.001

 

0.841

0.401

 

0.359

0.720

 No

2.165 ± 1.393

  

1.296 ± 0.180

  

0.356 ± 0.093

  

 Yes

1.753 ± 1.096

  

1.283 ± 0.171

  

0.353 ± 0.097

  

High-temperature and high-altitude operation

−1.471

0.142

 

0.872

0.384

 

−1.176

0.240

 No

1.810 ± 1.085

  

1.296 ± 0.181

  

0.348 ± 0.093

  

 Yes

1.965 ± 1.309

  

1.283 ± 0.171

  

0.358 ± 0.097

  

Visual display terminal operation

−0.510

0.611

 

1.083

0.280

 

−1.040

0.299

 No

1.888 ± 1.188

  

1.294 ± 0.164

  

0.351 ± 0.094

  

 Yes

1.946 ± 1.315

  

1.275 ± 0.194

  

0.360 ± 0.099

  

Smoking

 

1.116

0.265

 

2.272

0.023

 

−0.771

0.441

 No

1.947 ± 1.279

  

1.299 ± 0.171

  

0.352 ± 0.101

  

 Yes

1.817 ± 1.112

  

1.262 ± 0.181

  

0.358 ± 0.081

  

Drinking

 

−0.246

0.806

 

2.691

0.007

 

−1.410

0.159

 No

1.889 ± 1.282

  

1.314 ± 0.159

  

0.346 ± 0.094

  

 Yes

1.917 ± 1.205

  

1.273 ± 0.181

  

0.358 ± 0.096

  

Exercise

 

0.198

0.843

 

1.642

0.101

 

−0.178

0.859

 No

1.913 ± 1.204

  

1.295 ± 0.171

  

0.354 ± 0.092

  

 Yes

1.889 ± 1.316

  

1.266 ± 0.185

  

0.355 ± 0.106

  

Sleeping time/h

0.500

0.607

 

0.228

0.796

 

2.824

0.060

  < 6

1.862 ± 1.162

  

1.280 ± 0.172

  

0.363 ± 0.103

  

 6~

1.965 ± 1.288

  

1.291 ± 0.178

  

0.357 ± 0.090

  

 7~

1.852 ± 1.206

  

1.292 ± 0.173

  

0.337 ± 0.094

  
  1. Compared with the age group 20 ~ years old
  2. aP < 0.05; compared with the age group 30 ~ years old
  3. bP < 0.05; compared with the age group 50 ~ years old
  4. cP < 0.05; compared with the group of master or above
  5. dP < 0.05; compared with the work year group < 10 years
  6. eP < 0.05; compared with the work year group 30 ~ years
  7. fP < 0.05