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Table 2 Univariate Analysis of Factors Associated with Overall Survival before and after PSM

From: Survival analysis of stage II gastric cancer patients after D2 gastrectomy: a Chinese people-based research

 

Before PSM (n = 1121)

After PSM (n = 948)

Mean OS (month) [95% CI]

p value

Mean OS (month) [95% CI]

p value

Age

 

< 0.001

 

< 0.001

 < 60

113.90 [110.23–117.58]

 

115.39 [111.33–119.44]

 

≧ 60

91.26 [86.45–96.07]

 

91.24 [86.37–96.11]

 

Sex

 

0.025

 

0.075

 Male

100.44 [96.72–104.17]

 

98.80 [94.89–102.71]

 

 Female

110.05 [104.45–115.66]

 

108.50 [102.22–114.77]

 

Tumor location

 

 < 0.001

 

< 0.001

 Upper

93.41 [88.55–98.28]

 

91.61 [86.30–96.93]

 

 Middle

88.83 [81.59–96.07]

 

88.87 [80.62–97.12]

 

 Lower

110.89 [106.79–114.98]

 

111.21 [106.80–115.63]

 

 Linitis plastica

63.26 [51.61–74.91]

 

62.28 [49.97–74.59]

 

Tumor size

 

 < 0.001

 

0.002

 < 5 cm

109.01 [105.20–112.83]

 

107.99 [103.72–112.27]

 

≧ 5 cm

95.76[90.16–101.37]

 

89.71 [84.49–94.93]

 

SCA

 

0.164

 

0.122

 Yes

111.02 [104.65–117.38]

 

111.35 [104.17–118.52]

 

 No

101.11 [97.61–104.60]

 

97.42 [93.83–101.02]

 

MCA

 

0.740

 

0.622

 Yes

89.21 [82.56–95.87]

 

89.67 [82.71–96.63]

 

 No

104.98 [101.57–108.40]

 

104.22 [100.48–107.96]

 

CA199 (U/ml)

 

0.143

 

0.093

 < 37

106.21 [102.86–109.56]

 

105.86 [102.22–109.50]

 

≧ 37

82.17 [74.61–89.74]

 

80.08 [71.58–88.58]

 

CEA (ng/ml)

 

0.014

 

0.010

 < 5

106.67 [103.22–110.12]

 

106.31 [102.54–110.08]

 

≧ 5

78.17 [72.40–83.93]

 

77.03 [70.80–83.25]

 

HB (g/L)

 

0.206

 

0.140

 < 120

99.08 [94.01–104.14]

 

97.49 [91.83–103.15]

 

≧ 120

106.34 [102.36–110.32]

 

106.21 [101.91–110.50]

 

T stage

 

0.009

 

0.013

 T123

103.16 [99.89–106.43]

 

102.45 [98.81–106.09]

 

 T4

97.99 [91.00–104.97]

 

97.02 [89.34–104.70]

 

N stage

 

0.006

 

0.035

 Positive

106.01 [102.45–109.57]

 

104.76 [100.73–108.80]

 

 Negative

99.95 [94.99–104.90]

 

100.08 [94.77–105.40]

 
  1. OS, overall survival; SCA, signet ring cell carcinoma; MCA, mucinous adenocarcinoma; CEA, carcinoembryonic antigen; CA199, carbohydrate antigen 19-9