Table 3 Percent changes (%) and 95% confidence intervals (CI) of daily incidence from NPC with a one-unit increase in air pollutants (PM10, SO2, and NO2) at different lag days.

From: The association between ambient air pollution and the risk of incident nasopharyngeal carcinoma in Hangzhou, China

 

PM10

SO2

NO2

Lag0

0.14 (0.01, 0.28)*

0.01 (-0.87, 0.89)

0.16 (-0.19, 0.51)

Lag1

0.05 (-0.08, 0.17)

-0.33 (-1.18, 0.54)

-0.05 (-0.41, 0.32)

Lag2

0.01 (-0.02, 0.22)

0.22 (-0.60, 1.05)

0.34 (-0.01, 0.69)

Lag3

0.08 (-0.04, 0.20)

0.13 (-0.68, 0.95)

0.32 (-0.01, 0.66)

Lag4

0.07 (-0.05, 0.19)

-0.28 (-1.11, 0.54)

0.36 (0.03, 0.69)*

Lag5

0.03 (-0.09, 0.14)

0.52 (-0.29, 1.33)

0.21 (-0.12, 0.54)

Lag6

0.03 (-0.09, 0.14)

0.79 (0.01, 1.58)*

-0.03 (-0.36, 0.29)

Lag7

-0.02 (-0.14, 0.09)

-0.55 (-1.38, 0.28)

-0.24 (-0.57, 0.08)

Lag01

0.13 (-0.02, 0.28)

0.03 (-1.01, 1.08)

0.11 (-0.31, 0.53)

Lag02

0.17 (0.00, 0.34)*

0.15 (-1.02, 1.33)

0.29 (-0.17, 0.76)

Lag03

0.20 (0.02, 0.39)*

0.17 (-1.11, 1.47)

0.44 (-0.07, 0.95)

Lag04

0.23 (0.03, 0.42)*

0.06 (-1.34, 1.48)

0.60 (0.06, 1.15)*

Lag05

0.23 (0.02, 0.44)*

0.43 (-1.09, 1.97)

0.67 (0.10, 1.25)*

Lag06

0.23 (0.01, 0.45)*

0.88 (-0.74, 2.54)

0.61 (0.01, 1.20)*

Lag07

0.21 (-0.02, 0.45)

0.58 (-1.15, 2.33)

0.46 (-0.15, 1.08)

  1. Note: 1 * p < 0.05. 2 PC: the percentage increase in the risk of incident NPC associated with a one-unit increase in air pollutants. 2 Single-day lag effects: lag0, lag1, lag2, lag3, lag4, lag5, lag6, and lag7 (lag0 corresponds to the current-day air-pollutant concentration, and lag1 refers to the average concentration of air pollutants on the day before NPC incidence, etc.). 3 Cumulative lag effects: lag01, lag02, lag03, lag04, lag05, lag06, and lag07 (the lag01 corresponds to the 2-day moving average concentration of air-pollutant concentrations on the present day and previous day, etc.)
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