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Table 1 Characteristics of the LBP ( −) and LBP ( +) groups

From: Mental status is significantly associated with low back pain: a survey-based cross-sectional study among Japanese women

Characteristics

LBP ( −)

LBP ( +)

P

n

%

n

%

Total (n = 1000)

646

64.6

354

35.4

 

Physical features

Age (years)

    

0.001**

20–29

145

73.2

53

26.8

 

30–39

174

69.3

77

30.7

 

40–49

180

60.8

116

39.2

 

50–59

147

57.6

108

42.4

 

Lifestyle

Breathing rate (/min)

0.047*

 < 15

292

68.1

137

31.9

 

≥15

354

62.0

217

38.0

 

Duration of heater use

   

0.005**

Whole sleeping duration

68

56.2

53

43.8

 

Until waking up

35

53.0

31

47.0

 

Until falling asleep

46

74.2

16

25.8

 

Before waking up & until falling asleep

25

52.1

23

47.9

 

Do not use heater while sleeping

439

67.7

209

32.3

 

Do not use heater at all

33

60.0

22

40.0

 

History of consultations with a doctor regarding anemia

 < 0.001***

Currently undergoing anemia treatment

13

48.1

14

51.9

 

History of anemia treatment

50

52.1

46

47.9

 

Anemia present but not undergoing treatment

64

50.8

62

49.2

 

Presence of diseases other than anemia

57

60.6

37

39.4

 

Did not consult a doctor

462

70.3

195

29.7

 

History of analgesics use

 

 < 0.001***

2/week

20

51.3

19

48.7

 

1/week

28

45.2

34

54.8

 

3/month

65

57.0

49

43.0

 

Sometimes

140

55.3

113

44.7

 

No history of use

393

73.9

139

26.1

 

Dietary limitations

    

0.001**

Ongoing

145

60.4

95

39.6

 

Sometimes

300

61.5

188

38.5

 

No limitations

201

73.9

71

26.1

 

Menstrual history

    

 < 0.001***

Irregular

115

55.0

94

45.0

 

Painful

155

62.5

93

37.5

 

No problem

286

71.9

112

28.1

 

Absence of menstruation

90

62.1

55

37.9

 

Recent history of catching a cold

  

0.028*

No history of a cold

515

66.8

256

33.2

 

Last October ~ no (~ September yes)

83

57.6

61

42.4

 

Last October ~ yes

48

56.5

37

43.5

 

Smoking history

   

0.009**

No history

501

66.5

252

33.5

 

Sometimes

18

42.9

24

57.1

 

Very often

64

58.7

45

41.3

 

Smoked/not now

63

65.6

33

34.4

 

Duration of sleep (hours)

0.013*

< 6

222

59.0

154

41.0

 

6–7

214

66.7

107

33.3

 

≥7

210

69.3

93

30.7

 

Frequency of using the bathroom at night (nocturia)

 < 0.001***

0

414

70.5

173

29.5

 

1

181

57.3

135

42.7

 

2

34

52.3

31

47.7

 

≥3

17

53.1

15

46.9

 

History of sauna use

 < 0.001***

Yes

31

40.3

46

59.7

 

No

615

66.6

308

33.4

 

Hie

    

0.007**

Yes

328

68.9

148

31.1

 

No

318

60.7

206

39.3

 

Diet

Tastes and distastes

0.001**

Yes

88

51.8

82

48.2

 

N/A

244

67.6

117

32.4

 

No

314

67.0

155

33.0

 

Cold foods

0.004**

Frequently

265

59.4

181

40.6

 

N/A

202

71.1

82

28.9

 

Hardly

179

66.3

91

33.7

 

Consumption of richly flavored foods

0.020*

Frequently

189

58.5

134

41.5

 

N/A

272

67.2

133

32.8

 

Hardly

185

68.0

87

32.0

 

Mental status

Feelings of anger

0.013**

Yes

152

58.5

108

41.5

 

N/A

348

64.9

188

35.1

 

No

146

71.6

58

28.4

 

Feelings of inferiority

0.004**

Yes

265

70.1

113

29.9

 

N/A

251

63.9

142

36.1

 

No

130

56.8

99

43.2

 

Feelings of deteriorating health

0.001**

Yes

109

56.2

85

43.8

 

N/A

261

62.4

157

37.6

 

No

276

71.1

112

28.9

 

Feelings of exhaustion

 < 0.001***

Yes

153

56.5

118

43.5

 

N/A

239

62.1

146

37.9

 

No

254

73.8

90

26.2

 

Feelings of failure

 < 0.001***

Yes

223

57.8

163

42.2

 

N/A

196

63.4

113

36.6

 

No

227

74.4

78

25.6

 
  1. LBP low back pain; BMI body mass index; RT room temperature
  2. *P < 0.05
  3. **P < 0.01
  4. ***P < 0.001